title: Letter: Properties of 14-methylretinal, 13-desmethyl-14-methylretinal, and visual pigments formed therefrom.
mesh_terms: D000447:Aldehydes; D055598:Chemical Phenomena; D002621:Chemistry; D007536:Isomerism; D012168:Retinal Pigments; D014801:Vitamin A
chemical_list: D000447:Aldehydes; D012168:Retinal Pigments; D014801:Vitamin A