IYPTNGYTR acetate, a deamidation-sensitive signature peptide, is a deamidation product of Trastuzumab. IYPTNGYTR acetate can be used to monitor in vivo Trastuzumab metabolism[1].

IYPTNGYTR is deamidated at pH 7.5 and above, with a higher deamidation rate when the pH increases[1].

H2O:125 mg/mL (109.24 mM),Need ultrasonic
Powder: -20°C for 3 years
In solvent: -80°C for 2 years