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c/researchpeptides·submitted 2 years ago by u/adaeze_brandt

handling — 9 things I got wrong before I got it right

Discussionbranch of 6 comments

handling — 9 things I got wrong before I got it right — a position I have arrived at slowly and would like tested. Why purity and net content diverge, and why that is usually honest. Purity by area percent is a relative measure of what the detector saw. Net peptide content subtracts counterion, water and residual…

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6 comments, started 2 years ago
u/deleted_my_history127 points·2 years ago

Storage guidance that names a temperature, a state and a duration reflects actual stability work. Generic guidance usually reflects a template.

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u/adaeze_brandtOP47 points·2 years ago

Small fix — that is net peptide content, not purity. Both are on the certificate and they differ substantially here.

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u/yusuf_achebe78 points·2 years ago

lyophilised and stored cold is the default for a reason

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u/tired_ledger_notes30 points·2 years ago

Research-use-only material is not approved for human use. In this catalogue that covers essentially everything, which is why the board discusses material and analytics rather than outcomes.

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u/adaeze_brandtOP16 points·2 years ago

Net peptide content on the certificate was well below the purity figure and both were honest. Chemistry, not deception.

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u/katrin_girard9 points·2 years ago

the same name covers several different molecules in this space

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The wider research-peptide catalogue: thymosin fragments, GH secretagogues, melanocortin agonists, and the long tail of three-letter analogs. Focus on identity verification, handling and the state of the evidence — not on protocols, because these are not approved for human use.

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