Chemical Name: 8-Cyclopentyl-5-methyl-2-[[(5-piperazin-1-ylpyridin-2-yl)]amino]-8H-pyrido[2,3-d]pyrimidin-7-one
Synonym: Deacetyl PBC-9A ;Palbociclib DeBoc Des bromo Impurity ; Palbociclib Deacetyl Impurity
Smile: O=C1C=C(C)C(C=NC(NC2=CC=C(N3CCNCC3)C=N2)=N4)=C4N1C5CCCC5