abstract |
Active pharmaceutical ingredients being retinoic acid ester compounds including all- trans -retinoic acid tert -butyl ester, all- trans -retinoic acid iso -butyl ester, all- trans -retinoic acid iso -propyl ester, all- trans -retinoic acid sec -butyl ester, and, all- trans -retinoic acid 1-adamantyl ester, oral and topical dosage form compositions thereof, and methods of treating various skin conditions thereof. |