|
| Patents for C07D 521 - Heterocyclic compounds containing unspecified hetero rings (16,203) |
|---|
| 01/20/1976 | US3933800 New 3-formylrifamycin SV derivatives | | 01/13/1976 | US3932444 4-Imidazolylsulfonylimidazoles | | 01/06/1976 | US3931220 β-Phenyl-β-azolyl-nitroethanes |
|