Title: 2,3-Pyrazinedicarboxylic Acid
CAS Registry Number: 89-01-0
Molecular Formula: C6H4N2O4
Molecular Weight: 168.11
Percent Composition: C 42.87%, H 2.40%, N 16.66%, O 38.07%
Literature References: Prepd by permanganate oxidation of quinoxaline: Gabriel, Sonn, Ber. 40, 4850 (1907); Sausville, Spoerri, J. Am. Chem. Soc. 63, 3153 (1941); Jones, McLaughlin, Org. Synth. 30, 86 (1950).
Derivative Type: Dihydrate
Properties: Prisms from water. Becomes anhydr at 100°, then melts at 183-185° (with evolution of CO2). The dry dust provokes sneezing. Freely sol in water. Soluble in methanol, acetone, ethyl acetate. Slightly sol in ethanol, ether, chloroform, benzene, petr ether.
Melting point: melts at 183-185°
Derivative Type: Dimethyl ester
Molecular Formula: C8H8N2O4
Molecular Weight: 196.16
Percent Composition: C 48.98%, H 4.11%, N 14.28%, O 32.63%
Properties: Crystals, mp 50°. Sol in water, acetone. Insol in benzene, petr ether.
Melting point: mp 50°
Derivative Type: Diamide
Molecular Formula: C6H6N4O2
Molecular Weight: 166.14
Percent Composition: C 43.38%, H 3.64%, N 33.72%, O 19.26%
Properties: Crystals, dec 240°. Sol in boiling water.
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