For example, BPC-157 (sequence GEPPPGKPADDAGLV) has an academic monoisotopic mass of 1,419.53 Da. A mass specification confirmation revealing [M+H] + of 1,420.54 (the protonated molecule) would validate the right molecular weight. A discrepancy of greater than 0.5 Da recommends either a series mistake, an adjustment, or homepage (Wordspringer says) a different substance totally. ” Mass
