3415-90-5 4-08-00-01001 (Beilstein Handbook Reference) 4-Chloro-17-alpha-methyl-19-nortestosterone 4-Chloro-17-beta-hydroxy-17-methylestr-4-en-3-one BRN 2625267 Chlordrolone ESTR-4-EN-3-ONE, 4-CHLORO-17-beta-HYDROXY-17-METHYL- Estr-4-en-3-one, 4-chloro-17-hydroxy-17-methyl-, (17-beta)- NSC 522766 SKF 6612