Home › Entities › chlorophyll › chlorophyll a

chlorophyll a

chemical compound
Class type of: chlorophyll Q133878

Facts

11 properties
Instance of
group of stereoisomers
Subclass of
chlorophyll
Part of
chlorophyll a metabolic process, chlorophyll a biosynthetic process, chlorophyll a catabolic process, chlorophyll a biosynthetic process via phytyl diphosphate, chlorophyll a biosynthetic process via geranylgeranyl-chlorophyll a
Canonical SMILES
CCC1=C(C2=NC1=CC3=C(C4=C([N-]3)C(=C5C(C(C(=N5)C=C6C(=C(C(=C2)[N-]6)C=C)C)C)CCC(=O)OCC=C(C)CCCC(C)CCCC(C)CCCC(C)C)C(C4=O)C(=O)OC)C)C.[Mg+2]
Chemical formula
C₅₅H₇₂MgN₄O₅
Density
+1.079
Has part(s)
nitrogen, carbon, hydrogen, magnesium, oxygen
Isomeric SMILES
C=Cc1c(C)c2cc3nc(c4c5nc(cc6[n-]c(cc1[nH]2)c(C)c6CC)C(C)=C5C(=O)[C@@H]4C(=O)OC)[C@@H](CCC(=O)OC/C=C(\C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@@H]3C.[Mg+2]
Mass
+893.54258955609
Melting point
+152.3
Subject has role
primary metabolite
🏷️ Also known as
en chlorophyll a fa سبزینه ای fr C55H72MgN4O5 fr chlorophylle a ja クロロフィルa ko 엽록소 a pl chlorofil A ru хлорофилл a sv Klorofyll a vi Diệp lục a zh 葉綠素a
🔖 Identifiers · 30
OpenAlex ID
C2778902199
CAS Registry Number
479-61-8
Cannabis Database ID
005217
ChEBI ID
18230
ChemSpider ID
16736115
DSSTOX compound identifier
DTXCID501028608
DSSTox substance ID
DTXSID90889346
DrugBank ID
DB02133
EC number
207-536-6
ECHA Substance Infocard ID
100.006.852
Encyclopædia Britannica Online ID
science/chlorophyll-a
Fluorophores.org substance ID
532
Show all 30 identifiers +18
Freebase ID
/m/08091f3
Gmelin number
475109
Human Metabolome Database ID
HMDB0038578
InChI
InChI=1S/C55H73N4O5.Mg/c1-13-39-35(8)42-28-44-37(10)41(24-25-48(60)64-27-26-34(7)23-17-22-33(6)21-16-20-32(5)19-15-18-31(3)4)52(58-44)50-51(55(62)63-12)54(61)49-38(11)45(59-53(49)50)30-47-40(14-2)36(9)43(57-47)29-46(39)56-42;/h13,26,28-33,37,41,51H,1,14-25,27H2,2-12H3,(H-,56,57,58,59,61);/q-1;+2/p-1/b34-26+;/t32-,33-,37+,41+,51-;/m1./s1
InChIKey
ATNHDLDRLWWWCB-AENOIHSZSA-M
KEGG ID
C05306
KNApSAcK ID
C00001528
MeSH descriptor ID
D000077194
MeSH tree code
D03.383.129.578.840.374.140, D03.633.400.909.374.140, D04.345.783.374.140
Microsoft Academic ID (discontinued)
2778902199
PDB ligand ID
CLA
Probes And Drugs ID
PD126914
PubChem CID
16667503, 12085802
Reaxys registry number
4651978
ScienceDirect topic ID
agricultural-and-biological-sciences/chlorophyll-a, biochemistry-genetics-and-molecular-biology/chlorophyll-a, chemistry/chlorophyll-a, earth-and-planetary-sciences/chlorophyll-a, medicine-and-dentistry/chlorophyll-a, pharmacology-toxicology-and-pharmaceutical-science/chlorophyll-a
SureChEMBL ID
38371
UNII
YF5Q9EJC8Y
UniChem compound ID
23615488

Report an error or request removal Lineage (PROV-JSON)

🔗 Connections
Has part(s) 5
hydrogen, oxygen, carbon, nitrogen, magnesium
Subclass of 1
chlorophyll
Subject has role 1
primary metabolite
Subtypes 1
P700
← FactGrid item ID 1
Saint-Pierre-des-Loges
Press Enter · cited answer in seconds

Summary

chlorophyll an is a group of stereoisomers[1]. It is a type of chlorophyll[2].

Key Facts

  • Canonical SMILES: CCC1=C(C2=NC1=CC3=C(C4=C([N-]3)C(=C5C(C(C(=N5)C=C6C(=C(C(=C2)[N-]6)C=C)C)C)CCC(=O)OCC=C(C)CCCC(C)CCCC(C)CCCC(C)C)C(C4=O)C(=O)OC)C)C.[Mg+2][3]
  • Chemical formula: C₅₅H₇₂MgN₄O₅[4]
  • Part of: chlorophyll a metabolic process[5], chlorophyll a biosynthetic process[6], chlorophyll a catabolic process[7], chlorophyll a biosynthetic process via phytyl diphosphate[8], chlorophyll a biosynthetic process via geranylgeranyl-chlorophyll a[9]
  • Has part(s): nitrogen[10], carbon[11], hydrogen[12], magnesium[13], oxygen[14]
  • Isomeric SMILES: C=Cc1c(C)c2cc3nc(c4c5nc(cc6[n-]c(cc1[nH]2)c(C)c6CC)C(C)=C5C(=O)[C@@H]4C(=O)OC)C@@H[C@@H]3C.[Mg+2]C@@H[C@@H]3C.[Mg+2]">[15]
  • Density: 1.079 gram per cubic centimetre[16]
  • Mass: 893.54258955609 dalton[17]
  • Melting point: 152.3 °C[18]
  • Subject has role: primary metabolite[19]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . PubChem. wikidata.org.
  2. [4] ↑ . PubChem. wikidata.org.
  3. [2] ↑ . wikidata.org.
  4. [5] ↑ . Gene Ontology release 2020-05-02. wikidata.org.
  5. [6] ↑ . Gene Ontology release 2020-05-02. wikidata.org.
  6. [7] ↑ . Gene Ontology release 2020-05-02. wikidata.org.
  7. [8] ↑ . Gene Ontology release 2020-05-02. wikidata.org.
  8. [9] ↑ . Gene Ontology release 2020-05-02. wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.
  17. [18] ↑ . wikidata.org.
  18. [19] ↑ . Reactome. plantreactome.gramene.org. Provenance: wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). chlorophyll a. Retrieved November 7, 2026, from https://4ort.xyz/entity/chlorophyll-a
MLA “chlorophyll a.” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 Nov. 2026, https://4ort.xyz/entity/chlorophyll-a.
BibTeX @misc{4ortxyz_chlorophyll-a_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{chlorophyll a}}, year = {2026}, url = {https://4ort.xyz/entity/chlorophyll-a}, note = {Accessed: 2026-11-07}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): chlorophyll a — https://4ort.xyz/entity/chlorophyll-a (retrieved 2026-11-07)

Canonical URL: https://4ort.xyz/entity/chlorophyll-a · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 19w ago · FlocciNivis · 2026-06-25 view diff on Wikidata ↗
    PDB ligand ID → CLA
    "/* wbcreateclaim-create:1| */ PDB ligand ID: CLA, [[:toollabs:quickstatements/#/batch/259826|batch #259826]]"
  2. 20w ago · Nabbegat · 2026-06-19 view diff on Wikidata ↗
    Density → {'unit': 'Q13147228', 'amount': '+1.079'}
    Has parts → —
    Instance of → group of stereoisomers
    Part of → —
    + 9 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update-languages-short:0||tr */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/37300|batch #37300]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.