Fig. 1.
Fig. 1. Chemical structures of tretinoin tocoferil (TT) and its Z-isomer (9-cis isomer), 9-cis retinoic acid α-tocopherol ester (9CTT). TT and 9CTT are α-tocopherol esters of ATRA and 9CRA, respectively.

Chemical structures of tretinoin tocoferil (TT) and its Z-isomer (9-cis isomer), 9-cis retinoic acid α-tocopherol ester (9CTT). TT and 9CTT are α-tocopherol esters of ATRA and 9CRA, respectively.

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