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