The molecule is pentaanion of methylmalonyl-CoA arising from deprotonation of carboxy, phosphate and diphosphate OH groups; major species at pH 7.3. It is a conjugate base of a methylmalonyl-CoA.
3-[2-[3-[[(2R)-4-[[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-4-hydroxy-3-phosphonatooxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl]oxy-2-hydroxy-3,3-dimethylbutanoyl]amino]propanoylamino]ethylsulfanyl]-2-methyl-3-oxopropanoate