+6.92 amu/molecule. Corresponds to > 99 atom% 13C,> 98 atom% 15N, no unlabelled material detected.
Purity (HPLC/ELSD)
> 99.5% (PAR)Retention: 4.8 min
TEST CONDITIONS
Purity (HPLC/ELSD) Conditions: Method: Bonus RP, 4.6 x 150 mm, 4u; A: 0.2% Formic Acid in water; B: Acetonitrile; 1% B to 50% B over 10 minutes. Hold for 10 min; Flow: 1 mL/minIsotopic Enrichment was tested by Mass Spectroscopy. Method: Agilent MSD 1100; Conditions: API-E3 ionization mode; Negative ion mode; 700: 300: 0.05 Methanol/ Water/ Propionic Acid