The molecule is an acyl-CoA oxoanion arising from deprotonation of the phosphate, diphosphate and carboxy groups of (2S)-ethylmalonyl-CoA. It is a carboxylic acid anion and an omega-carboxyacyl-CoA(5-). It is a conjugate base of a (S)-ethylmalonyl-CoA.
(2S)-2-[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]ethylsulfanylcarbonyl]butanoate