Term Name:	precorrin-8X
Synonyms:	(1R-(1alpha,2alpha,3beta,9beta,13alpha,17beta,18alpha,19beta))-2,13,18-tris(carboxymethyl)-4,5,6,7,8,11,12,22-octadehydro-4,5,6,9,10,11,21,22-octahydro-3,5,8,9,13,15,18,19-octamethyl-3,7,12,17-Corrintetrapropanoic acid, 3,3',3'',3'''-[(1R,2S,3S,7S,8S,11S,17R,18R,19R)-2,7,18-tris(carboxymethyl)-1,2,5,7,11,12,15,17-octamethylcorrin-3,8,13,17-tetrayl]tetrapropanoic acid, Precorrin 8, Precorrin 8X
Definition:	The intermediate in the biosynthesis of vitamin B12 from uroporphyrinogen III in which eight methyl groups have been introduced into the tetrapyrrole framework, together with ring contraction and decarboxylation.
Ontology:	ChEBI [CHEBI:28629]  ( EBI )