The molecule is an acyl-CoA that results from the formal condensation of the thiol group of coenzyme A with the 1-carboxy group of (2Z)-2-sulfanylpent-2-enedioic acid. It is a conjugate acid of a (2Z)-4-carboxylato-2-sulfanylbut-2-enoyl-CoA(5-). It is a tautomer of a 4-carboxy-2-thioxobutanoyl-CoA.
(Z)-5-[2-[3-[[4-[[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-4-hydroxy-3-phosphonooxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl]oxy-2-hydroxy-3,3-dimethylbutanoyl]amino]propanoylamino]ethylsulfanyl]-5-oxo-4-sulfanylpent-3-enoic acid