51773-49-0

Einecs 257-409-4 Levonorgestrel Impurity 20 (2R)-2α-[(E)-2-(3,4-Dihydro-6-methoxynaphthalen)-1(2H)-ylideneethyl]-2β-ethyl-3β-hydroxycyclopentanone (2R,3S)-2-ethyl-3-hydroxy-2-(2-((E)-6-methoxy-3,4-dihydronaphthalen-1(2H)-ylidene)ethyl)cyclopentan-1-one Cyclopentanone, 2-[2-(3,4-dihydro-6-methoxy-1(2H)-naphthalenylidene)ethyl]-2-ethyl-3-hydroxy-, [2R-[2α(E),3β]]- (2R-(2alpha(E),3beta))-2-(2-(3,4-Dihydro-6-methoxy-1(2H)-naphthylidene)ethyl)-2-ethyl-3-hydroxycyclopentan-1-one [2R-[2alpha(E),3beta]]-2-[2-(3,4-dihydro-6-methoxy-1(2H)-naphthylidene)ethyl]-2-ethyl-3-hydroxycyclopentan-1-one