Chemical Name: 1-(4-ethoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide
Synonym: Montelukast (3S)-Hydroxy Methoxymethoxy Impurity
Smile: O=C1C2=C(C(C(N)=O)=NN2C3=CC=C(OCC)C=C3)CCN1C4=CC=C(N5C(CCCC5)=O)C=C4