3562. Emorfazone

Nomenclature

CAS number: 38957-41-4
4-Ethoxy-2-methyl-5-(4-morpholinyl)-3(2H)-pyridazinone; M-73101; Nandron (Morishita); Pentoyl (Morishita).
C11H17N3O3; mol wt 239.27.
C 55.22%, H 7.16%, N 17.56%, O 20.06%.

Description and 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.

Chemical structure

Properties

Cryst from methanol/isopropyl ether, mp 89-91°. LD50 i.p. in mice: 700 mg/kg (Takaya).

Therapeutic Category

Anti-inflammatory; analgesic.

Keywords

Anti-inflammatory (Nonsteroidal); Analgesic; Non-opioids