Chlorophyll d

Chlorophyll d (Chl d) is a form of chlorophyll, identified by Harold Strain and Winston Manning in 1943.^[1] It was unambiguously identified in Acaryochloris marina in the 1990s.^[2] It is present in cyanobacteria which use energy captured from sunlight for photosynthesis.^[3] Chl d absorbs far-red light, at 710 nm wavelength, just outside the optical range.^[4] An organism that contains Chl d is adapted to an environment such as moderately deep water, where it can use far red light for photosynthesis,^[5] although there is not a lot of visible light.^[6]

Chlorophyll d

Identifiers
CAS Number	519-63-1 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:38199 Y
ChemSpider	16736116 N
PubChem CID	6449882 16070025
UNII	60L1FX1O1U Y
CompTox Dashboard (EPA)	DTXSID80894762
InChI InChI=1S/C54H71N4O6.Mg/c1-12-38-34(7)42-27-46-40(29-59)36(9)41(56-46)26-43-35(8)39(51(57-43)49-50(54(62)63-11)53(61)48-37(10)44(58-52(48)49)28-45(38)55-42)22-23-47(60)64-25-24-33(6)21-15-20-32(5)19-14-18-31(4)17-13-16-30(2)3;/h24,26-32,35,39,50H,12-23,25H2,1-11H3,(H-,55,56,57,58,59,61);/q-1;+2/p-1/b33-24+;/t31-,32-,35+,39+,50-;/m1./s1 Y Key: QXWRYZIMSXOOPY-SKHCYZARSA-M Y InChI=1S/C54H71N4O6.Mg/c1-12-38-34(7)42-27-46-40(29-59)36(9)41(56-46)26-43-35(8)39(51(57-43)49-50(54(62)63-11)53(61)48-37(10)44(58-52(48)49)28-45(38)55-42)22-23-47(60)64-25-24-33(6)21-15-20-32(5)19-14-18-31(4)17-13-16-30(2)3;/h24,26-32,35,39,50H,12-23,25H2,1-11H3,(H-,55,56,57,58,59,61);/q-1;+2/p-1/b33-24+;/t31-,32-,35+,39+,50-;/m1./s1
SMILES CC(C)CCC[C@@H](C)CCC[C@@H](C)CCCC(\C)=C\COC(=O)CC[C@H]6[C@H](C)C=5/C=C/2\N\1[Mg]n4c(\C=C\3/N=C(/C=C/1C(\C=O)=C\2\C)C(/C)=C/3/CC)c(C)c7c4\C(=C6/N=5)[C@@H](C(=O)OC)C7=O
Properties
Chemical formula	C54H70MgO6N4
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Chl d is produced from chlorophyllide d by chlorophyll synthase. Chlorophyllide d is made from chlorophyllide a, but the oxygen-using enzyme that performs this conversion remains unknown as of 2022.^[7]

Ball-and-stick model	Space-filling model