Odd comments on Peptide Crafters ara-290 COA - what's this?
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There are comments on a COA for ara-290 on peptide crafters that I haven't seen before. A quick google makes me think this batch may be dangerous or suspect without identifying exactly WHAT caused the other peak. Anyone know for sure what this means? https://peptidecrafters.com/wp-content/uploads/2026/03/HPLC-ARA-290-16-mg-PC-G1-AR16-scaled.png
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This HPLC COA is also from the same batch, 2 months later.
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My research using AI concluded that mentioned "unretained peak" is something negligible and likely is a moisture or salt. I checked with Peptide Crafters to confirm they run counter-ion step to make it an acetate salt, not TFA. I actually coincidentally purchased the same batch yesterday from them.
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