Title: Heptabarbital
CAS Registry Number: 509-86-4
CAS Name: 5-(1-Cyclohepten-1-yl)-5-ethyl-2,4,6(1H,3H,5H)-pyrimidinetrione
Additional Names: 5-(1-cyclohepten-1-yl)-5-ethylbarbituric acid; 5-ethyl-5-cycloheptenylbarbituric acid; heptabarb
Trademarks: Heptadorm; Medomin (Novartis)
Molecular Formula: C13H18N2O3
Molecular Weight: 250.29
Percent Composition: C 62.38%, H 7.25%, N 11.19%, O 19.18%
Literature References: Prepn: FR 870714 (1942 to Geigy); Taub, US 2501551 (1950).
Properties: Crystals, mp 174°. Slightly bitter taste. uv max (0.2N NaOH): 218.5, 254 nm. Very sparingly sol in water, more sol in alcohol. At 25° 100 ml of soln contains: 4.0 g in alcohol; 5.7 g in acetone; 1.4 g. in chloroform. Soluble in alkaline solns. Forms water-soluble sodium, magnesium, and calcium salts.
Melting point: mp 174°
Absorption maximum: uv max (0.2N NaOH): 218.5, 254 nm
NOTE: This is a controlled substance (depressant): 21 CFR, 1308.13.
Therap-Cat: Sedative, hypnotic.
Keywords: Sedative/Hypnotic; Barbituric Acid Derivatives.

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