53282-28-3 ((2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohex-1-en-1-yl)penta-2,4-dien-1-yl)triphenylphosphonium chloride
62285-98-7 ((2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohex-2-en-1-yl)penta-2,4-dien-1-yl)triphenylphosphonium bromide