Title:  Emorfazone 
CAS Registry Number:  38957-41-4 
CAS Name:  4-Ethoxy-2-methyl-5-(4-morpholinyl)-3(2H)-pyridazinone 
Manufacturers' Codes:  M-73101 
Trademarks:  Nandron (Morishita);  Pentoyl (Morishita) 
Molecular Formula:  C11H17N3O3 
Molecular Weight:  239.27 
Percent Composition:  C 55.22%, H 7.16%, N 17.56%, O 20.06% 
Literature References:  Prepn:  K. Satoda et al., JP 72 24030 (1972 to Morishita), C.A. 77, 164732f (1972); M. Takaya et al., J. Med. Chem. 22, 53 (1979).  Metabolism studies:  T. Hayashi et al., Chem. Pharm. Bull. 26, 3124 (1978); 27, 317 (1979).  General pharmacological study:  M. Sato et al., Nippon Yakurigaku Zasshi 75, 291 (1979), C.A. 91, 117292 (1979).  Mechanism of action studies:  M. Sato, A. Yamaguchi, Arzneim.-Forsch. 32, 379 (1982).  Antigenicity study:  M. Sato et al., Oyo Yakuri 18, 65 (1979), C.A. 92, 104391 (1980).  Toxicity studies:  eidem, ibid. 16, 1011 (1978), C.A. 90, 197741 (1979); C. Onodera et al., J. Toxicol. Sci. 4, 229 (1979); K. Shimpo et al., ibid. 255. 
Properties:  Cryst from methanol/isopropyl ether, mp 89-91°.  LD50 i.p. in mice:  700 mg/kg (Takaya). 
Melting point:  mp 89-91° 
Toxicity data:  LD50 i.p. in mice:  700 mg/kg (Takaya) 
Therap-Cat:  Anti-inflammatory; analgesic. 
Keywords:  Analgesic (Non-Narcotic); Anti-inflammatory (Nonsteroidal).   |