S

Sarah Mitchell

📍 San Diego, CA

Science writer and researcher specializing in peptide applications. MSc in Molecular Biology.

Expertise: peptide applications scientific writing research methodology

Articles by Sarah Mitchell

Sourcing & Quality

How to Evaluate a New Peptide Supplier: The Complete Checklist

A systematic 15-point checklist for researchers evaluating new peptide suppliers, covering documentation, testing, manufacturing standards, communicat...

February 18, 2026
Compound Profiles

GHK-Cu Research Profile: Mechanisms, Applications, and Quality Standards

A comprehensive compound profile of the copper peptide GHK-Cu, covering its structure, copper-binding properties, research applications in wound heali...

February 18, 2026
Safety & Handling

Peptide Storage: Temperature, Light, and Moisture Guidelines

Peptide Storage: Temperature, Light, and Moisture Guidelines for Optimal Stability Peptides, short chains of amino acids, are increasingly utilized i...

February 5, 2026
Compound Profiles

PT-141 (Bremelanotide): Research Applications and Quality Assessment

PT-141 (Bremelanotide): Research Applications and Quality Assessment PT-141, also known as Bremelanotide, is a synthetic melanocortin receptor agonis...

February 5, 2026
Compound Profiles

Ipamorelin: Research Profile and Purity Standards

Ipamorelin: Research Profile and Purity Standards Ipamorelin is a pentapeptide with the amino acid sequence Aib-His-D-2-Nal-D-Phe-Lys-NH2. It is a gr...

February 5, 2026
Research Guides

Understanding Certificates of Analysis (COA) for Research Peptides

Understanding Certificates of Analysis (COA) for Research Peptides For researchers relying on synthetic peptides for their experiments, the Certifica...

February 5, 2026
Compound Profiles

PT-141 (Bremelanotide): Research Applications and Quality Assessment

PT-141 (Bremelanotide): Research Applications and Quality Assessment Bremelanotide, also known as PT-141, is a synthetic melanocortin receptor agonis...

February 5, 2026
Compound Profiles

Ipamorelin: Research Profile and Purity Standards

Ipamorelin: Research Profile and Purity Standards Ipamorelin is a pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH2) with the amino acid sequence Aib-His-D...

February 5, 2026
Compound Profiles

BPC-157: Complete Research Profile and Sourcing Considerations

BPC-157: Complete Research Profile and Sourcing Considerations BPC-157, short for Body Protection Compound-157, is a synthetic peptide sequence deriv...

February 5, 2026
Research Guides

Understanding Certificates of Analysis (COA) for Research Peptides

Understanding Certificates of Analysis (COA) for Research Peptides A Certificate of Analysis (COA) is a critical document that accompanies every batc...

February 5, 2026
Science & Studies

Peptide Synthesis Methods: How Research Peptides Are Made

Peptide Synthesis Methods: How Research Peptides Are Made The reliable synthesis of peptides is fundamental to a vast range of research areas, from d...

February 5, 2026
Sourcing & Quality

Domestic vs International Peptide Suppliers: Pros and Cons

Domestic vs. International Peptide Suppliers: A Researcher's Guide to Quality and Sourcing Peptides are indispensable tools in biomedical research, d...

February 5, 2026
Research Guides

Red Flags When Sourcing Research Peptides Online

Red Flags When Sourcing Research Peptides Online The online peptide market offers researchers a vast array of options, but navigating this landscape ...

February 5, 2026
Research Guides

Mass Spectrometry Verification: Confirming Peptide Identity

Mass Spectrometry Verification: Confirming Peptide Identity Mass spectrometry (MS) is an indispensable tool for confirming the identity and purity of...

February 5, 2026
Research Guides

How to Evaluate Peptide Supplier Quality: A Researcher's Guide

How to Evaluate Peptide Supplier Quality: A Researcher's Guide The quality of peptides used in research is paramount to the validity and reproducibil...

February 5, 2026
Science & Studies

Lyophilization: Why Peptides Come as Powder

Lyophilization: Why Peptides Come as Powder If you've ever ordered a custom peptide, you've likely received it as a white, fluffy powder. This seemin...

February 4, 2026
Science & Studies

Understanding Peptide Sequences and Nomenclature

Understanding Peptide Sequences and Nomenclature Peptide sequences are the fundamental language of peptide chemistry and biology. Accurate understand...

February 4, 2026
Science & Studies

Peptide Synthesis Methods: How Research Peptides Are Made

Peptide Synthesis Methods: How Research Peptides Are Made The reliable synthesis of peptides is fundamental to a vast range of research areas, from d...

February 4, 2026
Sourcing & Quality

How to Read and Verify a Peptide COA

Understanding and Verifying Your Peptide Certificate of Analysis (COA) The Certificate of Analysis (COA) is a crucial document accompanying your synt...

February 4, 2026
Sourcing & Quality

Domestic vs International Peptide Suppliers: Pros and Cons

Domestic vs. International Peptide Suppliers: A Researcher's Guide to Quality and Sourcing Peptides are indispensable tools in biomedical research, d...

February 4, 2026
Compound Profiles

CJC-1295: With and Without DAC - Research Comparison

CJC-1295: With and Without DAC - Research Comparison CJC-1295 is a synthetic peptide analogue of Growth Hormone Releasing Hormone (GHRH), also known ...

February 4, 2026
Sourcing & Quality

How to Read and Verify a Peptide COA

How to Read and Verify a Peptide Certificate of Analysis (COA) A Certificate of Analysis (COA) is a crucial document that accompanies every peptide s...

February 4, 2026
Sourcing & Quality

Peptide Purity Levels: What 95%, 98%, and 99% Actually Mean

Peptide Purity Levels: What 95%, 98%, and 99% Actually Mean When ordering peptides for research, the stated purity level is a critical specification....

February 4, 2026
Compound Profiles

CJC-1295: With and Without DAC - Research Comparison

CJC-1295: With and Without DAC - Research Comparison CJC-1295 is a synthetic peptide analogue of Growth Hormone Releasing Hormone (GHRH), primarily u...

February 4, 2026
Compound Profiles

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers TB-500, a synthetic peptide fragment of the naturally occurring Thymosin Beta-4 (TB4)...

February 4, 2026
Compound Profiles

BPC-157: Complete Research Profile and Sourcing Considerations

BPC-157: Complete Research Profile and Sourcing Considerations BPC-157, also known as Body Protecting Compound-157, is a synthetic peptide sequence d...

February 4, 2026
Research Guides

How to Evaluate Peptide Supplier Quality: A Researcher's Guide

Introduction: The Importance of Peptide Quality Peptides are increasingly vital tools in biomedical research, drug discovery, and materials science. H...

February 4, 2026
Sourcing & Quality

Domestic vs International Peptide Suppliers: Pros and Cons

Domestic vs. International Peptide Suppliers: A Comprehensive Guide for Researchers Sourcing high-quality peptides is paramount for reliable and repr...

February 4, 2026
Compound Profiles

PT-141 (Bremelanotide): Research Applications and Quality Assessment

PT-141 (Bremelanotide): Research Applications and Quality Assessment PT-141, also known as Bremelanotide, is a synthetic melanocortin receptor agonis...

February 4, 2026
Research Guides

HPLC Purity Testing Explained: What Researchers Need to Know

HPLC Purity Testing Explained: What Researchers Need to Know High-performance liquid chromatography (HPLC) is the gold standard for determining the p...

February 4, 2026
Research Guides

Understanding Certificates of Analysis (COA) for Research Peptides

Understanding Certificates of Analysis (COA) for Research Peptides A Certificate of Analysis (COA) is a crucial document accompanying research peptid...

February 4, 2026
Safety & Handling

Peptide Storage: Temperature, Light, and Moisture Guidelines

Peptide Storage: Temperature, Light, and Moisture Guidelines for Optimal Quality Peptides, short chains of amino acids, are increasingly vital in res...

February 4, 2026
Research Guides

HPLC Purity Testing Explained: What Researchers Need to Know

HPLC Purity Testing Explained: What Researchers Need to Know High-performance liquid chromatography (HPLC) is the gold standard for determining the p...

February 4, 2026
Research Guides

Understanding Certificates of Analysis (COA) for Research Peptides

Understanding Certificates of Analysis (COA) for Research Peptides A Certificate of Analysis (COA) is a critical document accompanying research pepti...

February 4, 2026
Safety & Handling

Peptide Storage: Temperature, Light, and Moisture Guidelines

Peptide Storage: Temperature, Light, and Moisture Guidelines Peptides, vital tools in biochemical research and drug discovery, are inherently suscept...

February 3, 2026
Science & Studies

Peptide Synthesis Methods: How Research Peptides Are Made

Peptide Synthesis Methods: How Research Peptides Are Made Peptides, short chains of amino acids linked by peptide bonds, are indispensable tools in b...

February 3, 2026
Compound Profiles

PT-141 (Bremelanotide): Research Applications and Quality Assessment

PT-141 (Bremelanotide): Research Applications and Quality Assessment PT-141, also known as Bremelanotide, is a synthetic melanocortin receptor agonis...

February 3, 2026
Safety & Handling

Peptide Stability: Shelf Life Before and After Reconstitution

Peptide Stability: Shelf Life Before and After Reconstitution Peptides, powerful tools in biological research and drug development, are inherently su...

February 3, 2026
Compound Profiles

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers TB-500 is a synthetic version of Thymosin Beta-4 (TB4), a naturally occurring peptide...

February 3, 2026
Compound Profiles

BPC-157: Complete Research Profile and Sourcing Considerations

BPC-157: Complete Research Profile and Sourcing Considerations BPC-157, also known as Bepecin or PL-14736, is a synthetic pentadecapeptide derived fr...

February 3, 2026
Research Guides

Understanding Certificates of Analysis (COA) for Research Peptides

Understanding Certificates of Analysis (COA) for Research Peptides A Certificate of Analysis (COA) is a crucial document accompanying research peptid...

February 3, 2026
Compound Profiles

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers Thymosin Beta-4 (TB-500) is a synthetic version of the naturally occurring peptide Th...

February 3, 2026
Safety & Handling

Peptide Stability: Shelf Life Before and After Reconstitution

Peptide Stability: Shelf Life Before and After Reconstitution Peptide stability is a critical factor influencing the reliability and reproducibility ...

February 3, 2026
Science & Studies

Lyophilization: Why Peptides Come as Powder

Lyophilization: Why Peptides Come as Powder If you've ever ordered a custom peptide, you've almost certainly received it as a white, fluffy powder. T...

February 3, 2026
Science & Studies

Peptide Synthesis Methods: How Research Peptides Are Made

Peptide Synthesis Methods: How Research Peptides Are Made Peptides, short chains of amino acids linked by peptide bonds, are indispensable tools in b...

February 3, 2026
Compound Profiles

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers Thymosin Beta-4 (TB-500) is a synthetic version of the naturally occurring 43-amino a...

February 3, 2026
Compound Profiles

BPC-157: Complete Research Profile and Sourcing Considerations

BPC-157: Complete Research Profile and Sourcing Considerations BPC-157, short for Body Protection Compound-157, is a pentadecapeptide comprised of 15...

February 3, 2026
Research Guides

Understanding Certificates of Analysis (COA) for Research Peptides

Understanding Certificates of Analysis (COA) for Research Peptides A Certificate of Analysis (COA) is a critical document that accompanies every batc...

February 3, 2026
Science & Studies

Understanding Peptide Sequences and Nomenclature

Understanding Peptide Sequences and Nomenclature: A Guide for Researchers Peptides are short chains of amino acids linked by peptide bonds. They play...

February 2, 2026
Research Guides

HPLC Purity Testing Explained: What Researchers Need to Know

HPLC Purity Testing Explained: What Researchers Need to Know High-Performance Liquid Chromatography (HPLC) is the gold standard for determining the p...

February 2, 2026
Science & Studies

Lyophilization: Why Peptides Come as Powder

Lyophilization: Why Peptides Come as Powder When you order a synthetic peptide, it almost invariably arrives as a white, fluffy powder. This isn't ju...

February 2, 2026
Sourcing & Quality

Domestic vs International Peptide Suppliers: Pros and Cons

Domestic vs. International Peptide Suppliers: A Researcher's Guide to Sourcing and Quality The synthesis and procurement of high-quality peptides are...

February 2, 2026
Safety & Handling

Peptide Stability: Shelf Life Before and After Reconstitution

Peptide Stability: Shelf Life Before and After Reconstitution Peptide stability is a critical factor in the success of any research project utilizing...

February 2, 2026
Safety & Handling

Peptide Reconstitution: Bacteriostatic Water vs Sterile Water

Peptide Reconstitution: Bacteriostatic Water vs. Sterile Water – A Comprehensive Guide for Researchers The reconstitution of peptides is a critical...

February 2, 2026
Compound Profiles

CJC-1295: With and Without DAC - Research Comparison

CJC-1295: With and Without DAC - Research Comparison CJC-1295 is a synthetic peptide analog of Growth Hormone Releasing Hormone (GHRH), also known as...

February 2, 2026
Research Guides

Mass Spectrometry Verification: Confirming Peptide Identity

Mass Spectrometry Verification: Confirming Peptide Identity Mass spectrometry (MS) is an indispensable tool for confirming the identity and purity of...

February 2, 2026
Safety & Handling

Peptide Storage: Temperature, Light, and Moisture Guidelines

Peptide Storage: Temperature, Light, and Moisture Guidelines for Maintaining Integrity Peptides, vital tools in research spanning drug discovery to m...

February 2, 2026
Science & Studies

Lyophilization: Why Peptides Come as Powder

Lyophilization: Why Peptides Come as Powder If you've ever ordered a custom peptide, you've likely received it as a seemingly unassuming white powder...

February 2, 2026
Sourcing & Quality

Peptide Purity Levels: What 95%, 98%, and 99% Actually Mean

Peptide Purity Levels: What 95%, 98%, and 99% Actually Mean Peptide synthesis has become an indispensable tool in biological research, enabling the s...

February 2, 2026
Compound Profiles

PT-141 (Bremelanotide): Research Applications and Quality Assessment

PT-141 (Bremelanotide): Research Applications and Quality Assessment PT-141, also known as Bremelanotide, is a synthetic melanocortin receptor agonis...

February 2, 2026
Compound Profiles

Ipamorelin: Research Profile and Purity Standards

Ipamorelin: Research Profile and Purity Standards Ipamorelin is a pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH2) and a growth hormone secretagogue (GHS...

February 2, 2026
Compound Profiles

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers

TB-500 (Thymosin Beta-4): Research Overview and Quality Markers TB-500, a synthetic version of the naturally occurring peptide Thymosin Beta-4 (TB4),...

February 2, 2026
Compound Profiles

BPC-157: Complete Research Profile and Sourcing Considerations

BPC-157: Complete Research Profile and Sourcing Considerations BPC-157, or Body Protection Compound-157, is a synthetic peptide sequence composed of ...

February 2, 2026
Research Guides

Mass Spectrometry Verification: Confirming Peptide Identity

Mass Spectrometry Verification: Confirming Peptide Identity Mass spectrometry (MS) is an indispensable tool for confirming the identity and purity of...

February 2, 2026
Science & Studies

Peptide Synthesis Methods: How Research Peptides Are Made

Peptide Synthesis Methods: How Research Peptides Are Made Peptides, short chains of amino acids linked by peptide bonds, are essential tools in moder...

February 1, 2026
Sourcing & Quality

How to Read and Verify a Peptide COA

How to Read and Verify a Peptide Certificate of Analysis (COA) The Certificate of Analysis (COA) is a crucial document accompanying every synthesized...

February 1, 2026
Sourcing & Quality

Third-Party Testing for Peptides: Why It Matters

Third-Party Testing for Peptides: Why It Matters In the realm of peptide research, the quality of your starting materials is paramount. Using peptide...

February 1, 2026
Compound Profiles

CJC-1295: With and Without DAC - Research Comparison

CJC-1295: With and Without DAC - Research Comparison CJC-1295 is a synthetic peptide analogue of Growth Hormone Releasing Hormone (GHRH), also known ...

February 1, 2026
Research Guides

Mass Spectrometry Verification: Confirming Peptide Identity

Mass Spectrometry Verification: Confirming Peptide Identity Mass spectrometry (MS) is an indispensable tool for verifying the identity of synthesized...

February 1, 2026
Sourcing & Quality

How to Read and Verify a Peptide COA

How to Read and Verify a Peptide Certificate of Analysis (COA) The Certificate of Analysis (COA) is the single most important document for assessing ...

February 1, 2026
Sourcing & Quality

Peptide Purity Levels: What 95%, 98%, and 99% Actually Mean

Peptide Purity Levels: What 95%, 98%, and 99% Actually Mean Peptide purity is a crucial factor influencing the success of any research project utiliz...

February 1, 2026
Compound Profiles

CJC-1295: With and Without DAC - Research Comparison

CJC-1295: With and Without DAC - Research Comparison CJC-1295 is a synthetic growth hormone-releasing hormone (GHRH) analog primarily used in researc...

February 1, 2026
Research Guides

Understanding Certificates of Analysis (COA) for Research Peptides

Understanding Certificates of Analysis (COA) for Research Peptides A Certificate of Analysis (COA) is a vital document that provides a detailed break...

February 1, 2026
Safety & Handling

Peptide Reconstitution: Bacteriostatic Water vs Sterile Water

Peptide Reconstitution: Bacteriostatic Water vs. Sterile Water - A Researcher's Guide Reconstituting peptides is a critical step in any research proj...

February 1, 2026
Compound Profiles

PT-141 (Bremelanotide): Research Applications and Quality Assessment

PT-141 (Bremelanotide): Research Applications and Quality Assessment PT-141, also known as Bremelanotide, is a synthetic melanocortin receptor agonis...

February 1, 2026
Compound Profiles

Ipamorelin: Research Profile and Purity Standards

Ipamorelin: Research Profile and Purity Standards Ipamorelin is a pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH2) with the amino acid sequence Aib-His-D...

February 1, 2026
Compound Profiles

BPC-157: Complete Research Profile and Sourcing Considerations

BPC-157: Complete Research Profile and Sourcing Considerations BPC-157, short for Body Protection Compound-157, is a synthetic peptide sequence consi...

February 1, 2026
Research Guides

Mass Spectrometry Verification: Confirming Peptide Identity

Mass Spectrometry Verification: Confirming Peptide Identity Mass spectrometry (MS) is an indispensable tool in peptide chemistry, serving as the gold...

February 1, 2026
Research Guides

HPLC Purity Testing Explained: What Researchers Need to Know

HPLC Purity Testing Explained: What Researchers Need to Know High-performance liquid chromatography (HPLC) is the gold standard for assessing the pur...

February 1, 2026
Research Guides

Antimicrobial Peptides: Fighting Drug Resistance

Antimicrobial peptides (AMPs) offer a novel approach to fighting drug-resistant bacteria. They disrupt bacterial membranes and have broad-spectrum act...

February 1, 2026
Research Guides

Exploring Therapeutic Peptides: Advances and Challenges

Explore the potential of peptides in therapeutics, recent synthesis advancements, and strategies for overcoming challenges in peptide research....

January 30, 2026
Science & Studies

Lyophilization: Why Peptides Come as Powder

Introduction to Lyophilization in Peptide Production Lyophilization, commonly known as freeze-drying, is a critical process in the production and pres...

January 26, 2026
Science & Studies

Understanding Peptide Sequences and Nomenclature

Understanding Peptide Sequences and Nomenclature Peptides, short chains of amino acids, play a crucial role in numerous biological processes and are ...

January 26, 2026
Sourcing & Quality

Domestic vs International Peptide Suppliers: Pros and Cons

Domestic vs International Peptide Suppliers: Pros and Cons When sourcing peptides for research purposes, choosing between domestic and international ...

January 26, 2026
Compound Profiles

BPC-157: Complete Research Profile and Sourcing Considerations

BPC-157: Complete Research Profile and Sourcing Considerations BPC-157, a synthetic peptide consisting of 15 amino acids, is gaining attention in the...

January 26, 2026
Research Guides

Nonribosomal Peptide Synthesis: Principles & Prospects

Dive into the world of nonribosomal peptide synthesis, exploring the principles, research findings, and practical tips for handling and sourcing....

January 26, 2026
Safety & Handling

Understanding Solid-State Stability of Peptides

Explore the solid-state chemical stability of peptides, crucial for maintaining their integrity and functionality in research applications....

January 26, 2026
Research Guides

Peptide Synthesis in Aqueous Microdroplets

Discover the innovative process of peptide synthesis in aqueous microdroplets. Learn about its mechanisms, research foundations, and practical tips fo...

January 26, 2026
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