Vitamin A (retinol) is a fat soluble vitamin.
1 International Unit (IU) vitamin A =
= 0.300 micrograms all-trans vitamin A1 =
= 0.344 micrograms all trans vitamin A1 acetate =
= 1 IU carotene =
= 0.6 micrograms beta carotene
molecular weight vitamin A: 286.46 grams
molecular weight vitamin A acetate: 328.48 grams
molecular weight beta carotene: 536.88 grams
1 IU vitamin A = 1.0473 nanomoles