-2.6 ppm at this mass is a clean identity confirmation. With retention at 9.51 min, SS-31 (Elamipretide) is established as the species measured. Note what it does not exclude: a mass-identical diastereomer, which no mass measurement of any resolution can.
ms_confirm
Identity confirmation practice. Two instruments or it is not confirmed.
Section 1
Contribution
Both submits records and annotates other people's.
Records submitted
12
n=12
Annotations
669
n=669
Median purity submitted
98.94%
n=12
Suppliers covered
11
n=12
Section 2
Records submitted
A submitter chose to buy this material and to pay for this assay. That choice is the selection mechanism behind the whole index and it is not random.
Section 3
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.
A reference standard on the same sequence would upgrade this from a good mass to a traceable one. The distinction matters where a result is going to be cited rather than merely read.
Two instruments or it is not confirmed, and this record is one instrument. It is a good one instrument, and the index records it as confirmed rather than corroborated for that reason.
An orthogonal identity method on the same lot would make this the strongest class of record the index holds. Mass plus retention is already better than most.
-2.1 ppm at this mass is a clean identity confirmation. With retention at 17.39 min, Semaglutide is established as the species measured. Note what it does not exclude: a mass-identical diastereomer, which no mass measurement of any resolution can.
Purity at 99.52 % with identity confirmed on the same submission is the combination worth having. Either alone leaves a question the other answers.
Purity at 99.62 % and water at 6.67 %: the two numbers are independent and both are needed. Excellent chromatography on a wet cake still yields less peptide per vial than the label implies.
-4.5 ppm at this mass is a clean identity confirmation. With retention at 17.26 min, Liraglutide is established as the species measured. Note what it does not exclude: a mass-identical diastereomer, which no mass measurement of any resolution can.
Purity at 99.93 % with identity confirmed on the same submission is the combination worth having. Either alone leaves a question the other answers.
Mass, retention and impurity profile all agree on this record. Three independent constraints pointing the same way is the strongest identity evidence the index publishes.
Purity at 99.66 % with identity confirmed on the same submission is the combination worth having. Either alone leaves a question the other answers.
Identity confirmed, purity 97.40 %, mass balance closed. This record is complete against the index definition of complete and there is nothing outstanding on it.
Showing 12 distinct comments of 669 annotations by this handle.