Product Description: Calcium carbonate,99.8%,PT-13C is the 13C labeled Calcium carbonate,99.95-100.05%,PT[1].
Formula: 13CHCaO3
References: [1]Russak EM, et al. Impact of Deuterium Substitution on the Pharmacokinetics of Pharmaceuticals. Ann Pharmacother. 2019 Feb;53(2):211-216.