Reductic Acid
Title: Reductic Acid
CAS Registry Number: 80-72-8
CAS Name: 2,3-Dihydroxy-2-cyclopenten-1-one
Additional Names: 2-cyclopenten-2,3-diol-1-one
Molecular Formula: C5H6O3
Molecular Weight: 114.10
Percent Composition: C 52.63%, H 5.30%, O 42.07%
Literature References: Antioxidant obtained from pectic substances: Reichstein, Oppenauer, Helv. Chim. Acta 16, 988 (1933); 17, 390 (1934); Goldstein, US 2854484 (1958). Alternate syntheses: Hesse et al., Ann. 563, 31 (1949); 592, 137 (1955); 736, 134 (1970). Crystal structure: D. Semmingsen, Acta Chem. Scand. B 31, 81 (1977). Similar to vitamin C in structure but not activity.
Properties: Pale yellow crystals (has been obtained colorless) from ethyl acetate, dec 213-213.5° (also reported as 207.5° and 211°). Soluble in water, methanol, ethanol. Sparingly sol in ether, ethyl acetate, acetone. Insol in benzene.
 
Derivative Type: 5-Methylreductic acid
Properties: mp 71°. Stronger reducing agent than reductic acid.
Melting point: mp 71°
 
Use: As antioxidant, like isoascorbic or ascorbic acid.

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