Synonyms: (3as,3br,10bs,12as)-12a-methyl-2,3,3a,3b,4,5,10b,11,12,12a-decahydro-1h-cyclopenta[7,8]phenanthro[2,3-d][1,3]dioxol-1-one;2-Hydroxyestrone 2,3-methylene ether;AC1L4S8J;AC1Q6P5D;KST-1A6404;53573-94-7;AR-1A4019;Estra-1,3,5(10)-trien-17-one, 2,3-(methylenebis(oxy))-