0.70 % total impurities on Epitalon means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
prep_hplc_cut
Preparative fraction cutting and the purity/yield trade it encodes.
Section 1
Contribution
Comments technically on records submitted by others. Annotations are signed and are not moderated for agreement.
Records submitted
0
n=0
Annotations
137
n=137
Median purity submitted
suppressed
n=0
n<3 — see individual records
Suppliers covered
0
n=0
This handle has submitted no records. Annotators comment on other people's submissions and are not required to submit.
Section 2
Annotations
Signed technical comments on records. The index does not moderate annotations for agreement with its own arithmetic, and several of these disagree with it. Where a handle has made the same point on several records, one instance is shown and the rest are reachable from the records themselves.
0.20 % total impurities on Ipamorelin means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
Total impurity load of 2.48 % with cysteinyl-glycine (−129 Da) dominant reads like a preparative fraction cut wide. Yield was preferred to purity somewhere upstream. That is a legitimate commercial decision and it belongs on the certificate.
0.14 % total impurities on MOTS-c means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
Total impurity load of 1.90 % with glutathione disulfide (GSSG, +305 Da) dominant reads like a preparative fraction cut wide. Yield was preferred to purity somewhere upstream. That is a legitimate commercial decision and it belongs on the certificate.
0.53 % total impurities on NAD+ means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
Total impurity load of 1.63 % with open-chain (reduced disulfide, +2 Da) dominant reads like a preparative fraction cut wide. Yield was preferred to purity somewhere upstream. That is a legitimate commercial decision and it belongs on the certificate.
0.66 % total impurities on Tirzepatide means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
0.61 % total impurities on PT-141 (Bremelanotide) means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
0.07 % total impurities on CJC-1295 (no DAC) means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
0.17 % total impurities on Semaglutide means the preparative fraction was cut narrow. That trades yield for purity, and the trade was made in the buyer's favour on this lot.
Purity 98.49 %, water 9.00 %, counter-ion 0.00 % counter-ion. Read together these say the cake is what it claims to be and the chromatographic homogeneity is the limiting property. That narrows the question usefully.
Showing 12 distinct comments of 137 annotations by this handle.