MW: 944.9. Purity >95%. C34H58N8O17P2S; MW 944.9 (free acid); lambdamax 267 nm; epsilon 17000; sodium salt; purity > 95% HPLC. For other salt forms please inquire. Biotin connected to the N6-position of adenosine-5'-O-diphosphate via a 20 atom spacer.