Pantethine or "Co-enzyme pantethine" is a dimeric form of vitamin B5, composed of two molecules of pantothenic acid linked by cysteamine bridging groups. Pantethine is considered the more biologically active form of vitamin B5, but is less stable than pantothenic acid and tends to decompose over time if it is not kept refrigerated, so most vitamin B5 supplements are in the form of calcium pantothenate.

N-[2-[2-[2-[3-(2,4-dihydroxy-3,3-dimethyl-butanoyl)aminopropanoylamino ]ethyldisulfanyl]ethylcarbamoyl]ethyl]-2,4-dihydroxy-3,3-dimethyl-buta namide.

CAS# 16816-67-4