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Patent / Jan 01, 1997
Process for the purification and crystallization of iopamidol using propanols
EP 747344
Patent / Jan 01, 1994
Process for simultaneous recovery of precious metals and tertiary phosphine from spent catalysts using tellurium
EP 565800
Patent / Jan 01, 1989
Rhodium-containing hydrogenation catalysts for the conversion of methacycline to doxycycline
EP 283615
Patent / Jan 01, 1989
Rhodium hydrogenation catalysts particularly for stereoselective hydrogenation of methacycline to doxycycline
EP 283616
Patent / Jan 01, 1989
Homogeneous catalytic system for hydrogenation of methylenetetracyclines and a process for the preparation of same
US 4743699