Pyrantel EP Impurity A (Pamoic salt)

Chemical Name: 1-Methyl-2-[(Z)-2-(thiophen-2-yl)eth-1-en-1-yl]-1,4,5,6-tetrahydropyrimidine 4,4'-methylenebis(3-hydroxy-2-naphthoate) (as per EP) ; ((Z)-1-Methyl-2-[2-(2-thiophenyl)vinyl]-1,4,5,6-Tetrahydropyrimidine 4,4’-methylenebis[3-hydroxy-2-naphthoate] (1:1)) (as per USP)

Synonym: Pyrantel USP Related Compound A

Smile: CN1CCCN=C1/C=C\C2=CC=CS2.O=C(O)C3=C(O)C(CC4=C5C=CC=CC5=CC(C(O)=O)=C4O)=C6C=CC=CC6=C3