CRYSTALLINE SESQUIHYDRATE OF 7-(D-AMINO-.alpha.-(P-HYDROXYPHENYL) ACETAMIDO)-3-(1,2,3,-TRIAZOL-5-YITHIOMETHYL)-3-CEPHEM-4-CARBOXYLIC ACID
CA 1050969 A · Owner: Bristol-Myers Squibb Company · Inventors: Kaplan, Murray A.; Granatek, Alphonse P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification discloses a novel cystalline sesquihydrate of 7-D-a-amino-a-(p-hydroxyphenyl)acetamido-3- (1,2,3-triazol-5-ylthiomethyl)-3 cephem-4-carboxylic acid which is particularly useful as an antibacterial agent. The specification discloses a process for the preparation of this compound, which process comprises suspending 7-D-alpha-amino-alpha-(p-hydroxy-phenyl)aeetamido -3-(1,2,3-triazol-5-ylthiomethyl-3-, cephem-4-carboxylic acid methanol solvate in water at a pH range of approximately 2.5 - 7.0 and recovering the desired crystalline sesquihydrate product from the aqueous reaction mixture.
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 March 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 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
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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.