A single purity figure across two compounds conflates two questions and answers neither. What a multi-component certificate has to report, and the one number people forget to check.
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Short peptides are easier to synthesise and harder to characterise than long ones. What an HPLC trace can and cannot resolve at three residues, and why mass spectrometry carries more of the weight.
Read the post →The blog covers buying, handling and research-design questions as they come up. The evergreen material lives in the guides: reading a certificate of analysis, storage and stability, one research guide per compound and the glossary.
New posts publish to the RSS feed. Every post is written for laboratory research use only and links to the lot certificate for any product it mentions.
One email when a new certificate is published, when a sold-out compound is back, or when a new compound is added. About twice a month, nothing else.
All products are sold for laboratory research use only. They are not drugs, foods, supplements or cosmetics, are not approved by the FDA, and are not intended to diagnose, treat, cure or prevent any disease, or for human or animal use. To continue, confirm that you are a qualified researcher or laboratory purchaser aged 21 or over.
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