is conjugate base of chlorophyllide(2-) chlorophyllide a(1-) chlorophyllide a(2-) chlorophyllide a -2 A cyclic tetrapyrrole anion arising from deprotonation of the carboxy group and the C-21 posiiton of chlorophyllide a. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). chebi_ontology 612.22341 CHEBI:83348 InChI=1S/C35H35N4O5.Mg/c1-8-19-15(3)22-12-24-17(5)21(10-11-28(40)41)32(38-24)30-31(35(43)44-7)34(42)29-18(6)25(39-33(29)30)14-27-20(9-2)16(4)23(37-27)13-26(19)36-22;/h8,12-14,17,21H,1,9-11H2,2-7H3,(H3,36,37,38,39,40,41,42);/q-1;+2/p-3/t17-,21-;/m0./s1 CCC1=C(C)C2=[N+]3C1=Cc1c(C)c4C(=O)[C-](C(=O)OC)C5=C6[C@@H](CCC([O-])=O)[C@H](C)C7=[N+]6[Mg--]3(n1c45)n1c(=C7)c(C)c(C=C)c1=C2 C35H32MgN4O5 IZOAGQOHKWGYKF-PVMVIUQGSA-K 612.95800