Record Information
Creation date2010-04-08 22:13:15 UTC
Update date2019-11-26 03:15:06 UTC
Primary IDFDB017710
Secondary Accession NumbersNot Available
Chemical Information
FooDB NameProcyanidin C1
DescriptionProcyanidin C1, also known as cinnamtannin A1 or procyanidol C1, belongs to the class of organic compounds known as biflavonoids and polyflavonoids. These are organic compounds containing at least two flavan/flavone units. These units are usually linked through CC or C-O-C bonds. Some examples include C2-O-C3, C2-O-C4, C3'-C3''', and C6-C8''. Procyanidin C1 is found, on average, in the highest concentration within a few different foods, such as chocolate, cocoa powder, and apples (Malus pumila) and in a lower concentration in broad beans (Vicia faba), chestnuts (Castanea), and pears (Pyrus communis). Procyanidin C1 has also been detected, but not quantified in, several different foods, such as yellow zucchinis (Cucurbita pepo var. cylindrica), lettuces (Lactuca sativa), pineapples (Ananas comosus), garden tomato (var.), and fruit juice. This could make procyanidin C1 a potential biomarker for the consumption of these foods. Based on a literature review a significant number of articles have been published on Procyanidin C1.
CAS Number37064-30-5
Cinnamtannin a1ChEBI
Proanthocyanidin C1ChEBI
Procyanidin trimer C1ChEBI
Procyanidol C1ChEBI
Procyanidin C1db_source
Predicted Properties
Water Solubility0.25 g/LALOGPS
pKa (Strongest Acidic)8.64ChemAxon
pKa (Strongest Basic)-5.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count18ChemAxon
Hydrogen Donor Count15ChemAxon
Polar Surface Area331.14 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity219.02 m³·mol⁻¹ChemAxon
Polarizability86.22 ųChemAxon
Number of Rings9ChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC45H38O18
IUPAC name(2R,3R,4S)-2-(3,4-dihydroxyphenyl)-8-[(2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-4-yl]-4-[(2R,3R)-2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-3,4-dihydro-2H-1-benzopyran-8-yl]-3,4-dihydro-2H-1-benzopyran-3,5,7-triol
InChI IdentifierInChI=1S/C45H38O18/c46-18-10-27(54)33-32(11-18)61-42(16-2-5-21(48)25(52)8-16)39(59)37(33)35-29(56)14-30(57)36-38(40(60)43(63-45(35)36)17-3-6-22(49)26(53)9-17)34-28(55)13-23(50)19-12-31(58)41(62-44(19)34)15-1-4-20(47)24(51)7-15/h1-11,13-14,31,37-43,46-60H,12H2/t31-,37-,38+,39-,40-,41-,42-,43-/m1/s1
Isomeric SMILES[H][C@]1([C@@H](O)[C@H](OC2=CC(O)=CC(O)=C12)C1=CC(O)=C(O)C=C1)C1=C2O[C@@H]([C@H](O)[C@@]([H])(C3=C(O)C=C(O)C4=C3O[C@@H]([C@H](O)C4)C3=CC(O)=C(O)C=C3)C2=C(O)C=C1O)C1=CC(O)=C(O)C=C1
Average Molecular Weight866.781
Monoisotopic Molecular Weight866.205814384
Description Belongs to the class of organic compounds known as biflavonoids and polyflavonoids. These are organic compounds containing at least two flavan/flavone units. These units are usually linked through CC or C-O-C bonds. Some examples include C2-O-C3, C2-O-C4, C3'-C3''', and C6-C8''.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
Sub ClassBiflavonoids and polyflavonoids
Direct ParentBiflavonoids and polyflavonoids
Alternative Parents
  • C-type proanthocyanidin
  • B-type proanthocyanidin
  • Bi- and polyflavonoid skeleton
  • Proanthocyanidin
  • Catechin
  • Flavan-3-ol
  • Hydroxyflavonoid
  • 3'-hydroxyflavonoid
  • 7-hydroxyflavonoid
  • 5-hydroxyflavonoid
  • 4'-hydroxyflavonoid
  • 3-hydroxyflavonoid
  • Flavan
  • Chromane
  • 1-benzopyran
  • Benzopyran
  • Catechol
  • Phenol
  • 1-hydroxy-2-unsubstituted benzenoid
  • Alkyl aryl ether
  • 1-hydroxy-4-unsubstituted benzenoid
  • Benzenoid
  • Monocyclic benzene moiety
  • Secondary alcohol
  • Polyol
  • Organoheterocyclic compound
  • Oxacycle
  • Ether
  • Hydrocarbon derivative
  • Alcohol
  • Organic oxygen compound
  • Organooxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors

Route of exposure:

Biological location:



Biological role:

Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
Physical stateNot Available
Physical DescriptionNot Available
Mass CompositionC 62.36%; H 4.42%; O 33.23%DFC
Melting Point140.0-142.0 oC
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical Rotation[a]D +102 (H2O)DFC
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
EI-MS/GC-MSNot Available
TypeDescriptionSplash KeyView
MS/MSLC-MS/MS Spectrum - LC-ESI-QTOF , negativesplash10-016r-0340210090-7a35b5c8f1ccbf9ce4feSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014j-0100005690-161c67165e6b61ef57bbSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0005-0100095720-02cbe7a0c9e7f5b22731Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-005a-0000091310-a37ac8e1536b30e63a1eSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0000000290-d007b6b11a94570a4ea1Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0f79-0940310530-208f53a241f13af95f6bSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-002r-0970202200-0b6a6c3437423c0f510fSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0000000090-1908e9268dd08c7b8ec0Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0ap0-0000000590-e0e939b2b90e92e9b2eeSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-05n1-0250010790-9209726cb0057ab3be6fSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-066r-0000000690-607bdbb728e2f09d08f3Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-014i-0100020590-0d606c193a998f7c0b1cSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0109-0910000580-1c47f69a0c96e4c8ee37Spectrum
NMRNot Available
ChemSpider ID148540
KEGG Compound IDC17624
Pubchem Compound ID169853
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer ID157
DrugBank IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDKZF49-Q:KZF50-K
EAFUS IDNot Available
BIGG IDNot Available
KNApSAcK IDC00009098
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDProanthocyanidin_C1
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Biological Effects and Interactions
Health Effects / Bioactivities
antioxidant22586 A substance that opposes oxidation or inhibits reactions brought about by dioxygen or peroxides. In European countries, E-numbers for permitted antioxidant food additives are from E 300 to E 324.CHEBI
lipoxygenase inhibitor35856 A compound or agent that combines with lipoxygenase and thereby prevents its substrate-enzyme combination with arachidonic acid and the formation of the icosanoid products hydroxyicosatetraenoic acid and various leukotrienes.CHEBI
xanthine oxidase inhibitor35634 An EC 1.17.3.* (oxidoreductase acting on CH or CH2 with oxygen as acceptor) inhibitor that interferes with the action of xanthine oxidase (EC
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference— Rothwell JA, Pérez-Jiménez J, Neveu V, Medina-Ramon A, M'Hiri N, Garcia Lobato P, Manach C, Knox K, Eisner R, Wishart D, Scalbert A. (2013) Phenol-Explorer 3.0: a major update of the Phenol-Explorer database to incorporate data on the effects of food processing on polyphenol content. Database, 10.1093/database/bat070.
— Duke, James. 'Dr. Duke's Phytochemical and Ethnobotanical Databases. United States Department of Agriculture.' Agricultural Research Service, Accessed April 27 (2004).
— Shinbo, Y., et al. 'KNApSAcK: a comprehensive species-metabolite relationship database.' Plant Metabolomics. Springer Berlin Heidelberg, 2006. 165-181.