Process for preparing substituted guanidines
CA 1068715 A · Owner: Smith Kline And French Laboratories Limited · Inventors: Durant, Graham J.; Brown, Thomas H.; Ganellin, Charon R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmacologically active compounds of the formula: wherein R1 represents, Het-CH2S(CH2)2wherein Het is imidazole, optionally substituted by (C1-4) alkyl and R2 is hydrogen or (C1-4) alkyl. The compounds can be in the form of a hydrate, a pharmaceutically acceptable acid addition salt or a hydrated salt thereof. The compounds are histamine H2-antagonists and are useful as inhibitors of gastric acid secretion as anti-, inflammatory agents and as agents which act on the cardiovascular system.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 25, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 25, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.