| Title:  Pinacidil CAS Registry Number:  60560-33-0 CAS Name:  N-Cyano-N¢-4-pyridinyl-N¢¢-(1,2,2-trimethylpropyl)guanidine Manufacturers' Codes:  P-1134 Molecular Formula:  C13H19N5 Molecular Weight:  245.32 Percent Composition:  C 63.65%, H 7.81%, N 28.55% Literature References:  Potassium channel opening vasodilator.  Prepn:  H. J. Petersen, DE 2557438; idem, US 4057636 (1976, 1977 both to Leo Pharm.); H. J. Petersen et al., J. Med. Chem. 21, 773 (1978).  Mechanism of action:  E. Arrigoni-Martelli et al., Experientia 36, 445 (1980); K. M. Bray et al., Br. J. Pharmacol. 91, 421 (1987).  Metabolism:  E. Eilertsen et al., Xenobiotica 12, 187 (1982).  Bioavailability:  eidem, ibid. 177.  Determn in plasma:  M. Hamilton et al., J. Chromatogr. 375, 359 (1986).  Pharmacokinetics and hypotensive effects:  J. W. Ward et al., Eur. J. Clin. Pharmacol. 26, 603 (1984).  Clinical comparison with hydralazine, q.v.:  R. L. Byyny et al., Clin. Pharmacol. Ther. 42, 50 (1987).  Review of pharmacology and mechanism of action:  M. L. Cohen:  Drug Dev. Res. 9, 249-258 (1986).   Derivative Type:  Monohydrate  CAS Registry Number:  85371-64-8 Trademarks:  Pindac (Leo Pharm) Molecular Formula:  C13H19N5.H2O Molecular Weight:  263.34 Percent Composition:  C 59.29%, H 8.04%, N 26.59%, O 6.08% Properties:  Crystals, mp 164-165°.  LD50 in mice, rats (mg/kg):  600, 570 orally (Petersen, 1978). Melting point:  mp 164-165° Toxicity data:  LD50 in mice, rats (mg/kg):  600, 570 orally (Petersen, 1978)   Therap-Cat:  Antihypertensive. Keywords:  Antihypertensive; Guanidine Derivatives; Potassium Channel Activator/Opener.  |