
Bortezomib Acid Impurity ;
Bortezomib USP Impurity D ;
(2S)-3-Phenyl-2-[(pyrazin-2-ylcarbonyl)amino]propanoic acid ;
N-(2-Pyrazinyl carbonyl)-L-phenylalanine ;
(S)-3-Phenyl-2-(pyrazine-2-carboxamido)propanoic acid ;
CAS # 114457-94-2 ;
C14H13N3O3 ;
MW: 271.27 ;