Acalabrutinib Impurity 3

Chemical Name: (2S)-2-amino-5-[[(1R)-1-[[(E)-3-[(2S)-2-[8-amino-1-[4-(2-pyridylcarbamoyl)phenyl] imidazo[1,5-a]pyrazin-3-yl]pyrrolidin-1-yl]-1-methyl-3-oxo-prop-1-enyl]sulfanylmethyl]-2-(carboxy methylamino)-2-oxo-ethyl]amino]-5-oxo-pentanoic acid

Synonym: 6,7-Dimethoxy-2-(piperazin-1-yl)quinazolin-4-amine

Smile: O=C(O)[C@@H](N)CCC(N[C@@H](CS/C(C)=C/C(N1[C@H](C2=NC(C3=CC=C(C(NC4=NC=CC=C4)=O)C=C3)=C5C(N)=NC=CN52)CCC1)=O)C(N(C(O)=O)C)=O)=O