The molecule is an acyl-CoA oxoanion obtained by deprotonation of the phosphate, diphosphate and carboxy groups of 4-carboxy-2-thioxobutanoyl-CoA It is a conjugate base of a 4-carboxy-2-thioxobutanoyl-CoA. It is a tautomer of a (2Z)-4-carboxylato-2-sulfanylbut-2-enoyl-CoA(5-).
5-[2-[3-[[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]-5-oxo-4-sulfanylidenepentanoate