Record Information
Version 1.0
Update Date 1/22/2018 11:54:54 AM
Metabolite IDPAMDB001686
Identification
Name: Reduced riboflavin
Description:Reduced riboflavin is a member of the chemical class known as Quinoxalines. These are compounds containing a quinoxaline moiety, a bicyclic heterocycle made up of a benzene ring fused to a pyrazine ring. Compared to riboflavin, reduced riboflavin has one extra hydrogen attached to an oxygen on its ring structure. Riboflavin, also known as vitamin B2, is the central component of the cofactors FAD and FMN, and is therefore required by all flavoproteins. As such, vitamin B2 is required for a wide variety of cellular processes. It plays a key role in energy metabolism, and for the metabolism of fats, ketone bodies, carbohydrates, and proteins. The reduced form, which occurs in metabolism along with the oxidized form, is colorless. (Wikipedia)
Structure
Thumb
Synonyms:
  • 1-Deoxy-1-(7,8-dimethyl-2,4-dioxo-1,3,4,5-tetrahydrobenzo[g]pteridin-10(2H)-yl)-D-ribitol
  • 4a,5-Dihydroriboflavine
  • 7,8-Dimethyl-10-(D-ribo-2,3,4,5-tetrahydroxypentyl)-4a,5-dihydroisoalloxazine
  • 7,8-Dimethyl-10-(D-ribo-2,3,4,5-tetrahydroxypentyl)-5,10-dihydrobenzo[g]pteridine-2,4(3H,4aH)-dione
  • Reduced riboflavin
Chemical Formula: C15H16N4O6
Average Molecular Weight: 348.3107
Monoisotopic Molecular Weight: 348.106984264
InChI Key: ATANIONNQLTUND-CKYFFXLPSA-N
InChI:InChI=1S/C15H16N4O6/c20-6-10(22)12(23)9(21)5-19-8-4-2-1-3-7(8)16-11-13(19)17-15(25)18-14(11)24/h1-4,9-10,12,20-23H,5-6H2,(H,18,24,25)/t9-,10-,12-/m1/s1
CAS number: Not Available
IUPAC Name:7,8-dimethyl-10-[(2S,3S,4R)-2,3,4,5-tetrahydroxypentyl]-1H,2H,3H,4H,5H,10H-benzo[g]pteridine-2,4-dione
Traditional IUPAC Name: reduced riboflavin
SMILES:OC[C@@H](O)[C@H](O)[C@H](O)CN1C2=CC=CC=C2N=C2C(=O)NC(=O)N=C12
Chemical Taxonomy
Taxonomy DescriptionThis compound belongs to the class of organic compounds known as flavins. These are compounds containing a flavin (7,8-dimethyl-benzo[g]pteridine-2,4-dione) moiety, with a structure characterized by an isoalloaxzine tricyclic ring.
Kingdom Organic compounds
Super ClassOrganoheterocyclic compounds
Class Pteridines and derivatives
Sub ClassAlloxazines and isoalloxazines
Direct Parent Flavins
Alternative Parents
Substituents
  • Flavin
  • Alkyldiarylamine
  • Pyrimidone
  • Benzenoid
  • Pyrimidine
  • Heteroaromatic compound
  • Vinylogous amide
  • Urea
  • Tertiary amine
  • Secondary alcohol
  • Polyol
  • Lactam
  • 1,2-diol
  • Azacycle
  • Secondary amine
  • Hydrocarbon derivative
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Amine
  • Alcohol
  • Aromatic heteropolycyclic compound
Molecular Framework Aromatic heteropolycyclic compounds
External Descriptors
Physical Properties
State: Not Available
Charge:0
Melting point: Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
Water Solubility4.57 mg/mLALOGPS
logP-0.23ALOGPS
logP-0.99ChemAxon
logS-1.9ALOGPS
pKa (Strongest Acidic)8.49ChemAxon
pKa (Strongest Basic)-0.52ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count7ChemAxon
Polar Surface Area154.39 Å2ChemAxon
Rotatable Bond Count5ChemAxon
Refractivity107.64 m3·mol-1ChemAxon
Polarizability38.51 Å3ChemAxon
Number of Rings3ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations: Cytoplasm
Reactions:
Pathways: Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-01t9-1029000000-e1824e653f3f2fb2ce59View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-08fr-4092000000-979bf706ce04da031e19View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-08g0-2390000000-3676862bf9c28ecda48fView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-01di-4049000000-216656a4d924fd9fda97View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0006-9051000000-d43dab3ee3b400d85bf3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-9130000000-b332bc728153ecc01bfbView in MoNA
References
References: Not Available
Synthesis Reference: Not Available
Material Safety Data Sheet (MSDS) Not Available
External Links:
ResourceLink
CHEBI ID17607
HMDB IDNot Available
Pubchem Compound ID11245895
Kegg IDC01007
ChemSpider ID26330553
WikipediaRiboflavin
BioCyc IDCPD-316
EcoCyc IDCPD-316

Enzymes

General function:
Involved in sulfite reductase (NADPH) activity
Specific function:
Component of the sulfite reductase complex that catalyzes the 6-electron reduction of sulfite to sulfide. This is one of several activities required for the biosynthesis of L- cysteine from sulfate
Gene Name:
cysI
Locus Tag:
PA1838
Molecular weight:
62.1 kDa
Reactions
H(2)S + 3 NADP(+) + 3 H(2)O = sulfite + 3 NADPH.