Purity typically ranges from 95% to 99%, and reputable manufacturers provide detailed certificates of analysis with each batch
the amino acid or amino acid analogs used in the sequential coupling of step 2) are Fmoc protected amino acids, wherein Boc-His(Trt)-OH or Boc-His(Boc)-OH.DCHA is used for H-His 7 , Fmoc-Lys(Alloc)-OH is used for Lys 26 , and octadecanedioic acid mono-tert-butyl ester is used for the coupling of Octadecanedioic Acid
Reference: Japjec M, Horvat Pavlov K, Petrovic A, et al
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At every step, we prioritize quality by conducting rigorous third-party testing with BT Labs, a facility with over 25 years of experience in the pharmaceutical industry