Etoposide EP Impurity I

Chemical Name: (5R,5aR,8aR,9S)-9-[[4,6-O-[(1R)-ethane-1,1-diyl]-b-D-glucopyranosyl]oxy]-5-(3,4,5-trimethoxyphenyl)-5,8,8a,9-tetrahydro[2]benzofuro[5,6-f][1,3]benzodioxol-6(5aH)-one (4-O-methylethylidene-lignan P)

Synonym: alfa-Hydroxy-5-Methyltetrahydrofolic Acid

Smile: O=C1[C@@]([C@H](C2=CC(OC)=C(OC)C(OC)=C2)C3=C4C=C(OCO5)C5=C3)([H])[C@]([C@@H]4O[C@H]6[C@@H]([C@H]([C@@H]([C@@H](CO7)O6)O[C@@H]7C)O)O)([H])CO1