Isoalloxazine

Isoalloxazine is the structural foundation of flavins such as riboflavin (vitamin B2) and is a heterocyclic compound. It has a tricyclic structure which means it has three interconnected rings of atoms and is a tautomer of alloxazine. The structure is formed by primary-secondary aromatic o-diamines and they are a high-melting crystalline substance. The R-group is used to attach various flavin groups It has a similar structure to pteridines which has two interconnected rings. Isoalloxazine was first obtained in 1934 by Richard Kuhn an Austrian-German biochemist and lab mates.

Isoalloxazine
Names
IUPAC name
1H-benzo[g]pteridine-2,4-dione
Other names
1,2,3,4-Tetrahydrobenzopteridine-2,4-dione; Benzo(g)pteridine-2,4(1H,3H)-dione
Identifiers
3D model (JSmol)
85819
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.007.014
EC Number
  • 207-714-3
PubChem CID
UNII
  • InChI=1S/C10H6N4O2/c15-9-7-8(13-10(16)14-9)12-6-4-2-1-3-5(6)11-7/h1-4H,(H2,12,13,14,15,16)
    Key: HAUGRYOERYOXHX-UHFFFAOYSA-N
SMILES
  • C1=CC=C2C(=C1)N=C3C(=N2)NC(=O)NC3=O
Properties
C10H6N4O2
Molar mass 214.184 g·mol−1
Appearance Red solid
Melting point 200 °C (392 °F; 473 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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