Title: Endralazine
CAS Registry Number: 39715-02-1
CAS Name: 6-Benzoyl-5,6,7,8-tetrahydropyrido[4,3-
c]pyridazin-3(2
H)-one hydrazone
Synonyms: 6-benzoyl-3-hydrazino-5,6,7,8-tetrahydropyrido[4,3-
c]pyridazine
Molecular Formula: C14H15N5O
Molecular Weight: 269.30
Percent Composition: C 62.44%, H 5.61%, N 26.01%, O 5.94%
Literature References: Prepn: E. Schenker,
DE 2221808;
idem, US 3838125 (1972, 1974 both to Sandoz); E. Schenker, R. Salzmann,
Arzneim.-Forsch. 29, 1835 (1979). Pharmacology: R. Salzmann
et al., ibid. 1843. Hemodynamic study: H. U. Lehmann
et al., Z. Cardiol. 66, 203 (1977). HPLC determn in human plasma: P. A. Reece
et al., J. Chromatogr. 225, 151 (1981). Clinical pharmacology: F. C. Reubi,
Eur. J. Clin. Pharmacol. 13, 185 (1978). Clinical study in hypertension: H. U. Lehmann
et al., Med. Welt 29, 1007 (1978).
Properties: Crystals from acetonitrile/water, mp 220-223° (dec).
Melting point: mp 220-223° (dec)
Derivative Type: Methanesulfonate
CAS Registry Number: 65322-72-7
Synonyms: Endralazine mesylate
Manufacturers' Codes: BQ 22-708
Trademarks: Miretilan (Sandoz)
Molecular Formula: C14H15N5O.CH3SO3H
Molecular Weight: 365.41
Percent Composition: C 49.30%, H 5.24%, N 19.17%, O 17.51%, S 8.78%
Properties: Cryst, mp 185-188° (dec).
Melting point: mp 185-188° (dec)
Therap-Cat: Antihypertensive.
Keywords: Antihypertensive; Hydrazines/Phthalazines.