18-Norandrost-13(17)-en-16-one, 3-hydroxy-17-methyl-, (3alpha,5beta)- 3-Hydroxy-17-methyl-18-norandrost-13(17)-ene-16-one 3alpha-Hydroxy-17-methyl-18-nor-5beta-androst-13(17)-ene-16-one 81354-99-6 Steroid U