Figure 1:
Chemical structure. (A) Alitretinoin (9-cis-retinoic acid; 9-cRA), (B) 4-oxo-alitretinoin (4-oxo-9-cis-retinoic acid; 4-oxo-9-cRA) and (C) Isotretinoin-d
5
(13-cis-retinoic acid-d
5
; 13-cRA-d
5
).
