Term Name:	precorrin-6X
Synonyms:	3,3',3'',3'''-[(1R,2S,3S,7S,11S,17R)-2,7,12,18-tetrakis(carboxymethyl)-1,2,7,11,17-pentamethyl-18,19-didehydrocorrin-3,8,13,17-tetrayl]tetrapropanoic acid, Precorrin 6A, Precorrin 6X
Definition:	The intermediate in the biosynthesis of vitamin B12 from uroporphyrinogen III in which six methyl groups have been introduced into the tetrapyrrole framework, together with ring contraction.
Ontology:	ChEBI [CHEBI:27513]  ( EBI )