Penta-O-acetyl-D-gluconic Acid is an intermediate in the synthesis of 1-(4-Chlorophenyl)-5-[6-[[4-[(4-chlorophenyl)amino]-6-[(1S,2R,3R,4R)-1,2,3,4,5-pentahydroxypentyl]-1,3,5-triazin-2-yl]amino]hexyl]biguanide D-Gluconic Acid Salt (C378545), which is an impurity of Chlorhexidine Digluconate (C292770). Chlorhexidine gluconate is an antimicrobial irrigant that is used as an antiseptic for the skin in the healthcare industry. It is used in hospitals to prevent infection of patients during surgeries and can also be found in mouth rinses. Molecular Formula: C16H22O12 Molecular Weight: 406.34