Tretinoin EP Impurity F

(2Z,4E,6E,8E)-3,7-dimethyl-9-((E)-2,6,6-trimethyl-4-((2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohex-1-en-1-yl)penta-2,4-dien-1-ylidene)-3-oxocyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoic acid

(2S,3S,4S,5R,6S)-6-(((2E,4E,6Z,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoyl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid

(2S,3S,4S,5R,6S)-6-(((2Z,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoyl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid

(2Z,4E,6E,8E)-9-(3-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7-dimethylnona-2,4,6,8-tetraenoic acid

(2Z,4E,6Z,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoic acid

(2E,4E,6Z,8E)-3,7-dimethyl-9-(2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-1-yl)nona-2,4,6,8-tetraenoic acid

(2E,4E,6Z)-3-methyl-7-(4,4,7a-trimethyl-2,4,5,6,7,7a-hexahydrobenzofuran-2-yl)octa-2,4,6-trienoic acid

(2E,4E,6E,8E)-3,7-dimethyl-9-(2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-1-yl)nona-2,4,6,8-tetraenoic acid

(2E,4E,6Z,8E)-9-(3-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7-dimethylnona-2,4,6,8-tetraenoic acid

(2E,4E,6E,8E)-9-(3-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7-dimethylnona-2,4,6,8-tetraenoic acid

(2S,3S,4S,5R,6S)-6-(((2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoyl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid

(2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoic acid-D5

(2Z,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethyl-3-oxocyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoic acid