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EP0022342A2
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EP
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Sulfonamide solutions
Assignee: Pfizer Inc
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Filing: 1980-06-30
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Granted: —
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Expires: 2000-06-30
Abstract
Abstract Aqueous parenteral sulfonamide solutions comprising water, from 10 to 20% w/v based on the total volume of solution of sulfamethoxazole or sulfadoxine, from 3 to 5% w/v based on the total volume of solution of trimethoprim, and from 60 to 80% w/v based on the total volume of solution of 2-pyrrolidone. Polyvinylpyrrolidone may also be present having an m.w. of from 5000 - 100,000.
Inventors
- 👤 William Wellesley Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:06
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/06; A61K47/22; A61K31/00; A61K31/63; A61K31/635; A61K47/30; A61K47/32; A61K9/00; A61K9/0012; A61K9/0019
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A sulfonamide solution comprising (a) water (b) from 10 to 20% w/v based on the total volume of solution of sulfamethoxazole or sulfadoxine (c) from 3 to 5% w/v based on the total volume of solution of trimethoprim and (d) from 60 to 80% w/v based on the total volume of solution of 2-pyrrolidone, the solution having a pH of from 5 to 9.5.
Claim 2
Dependent Claim
64 words
A sulfonamide solution comprising (a) water (b) from 10 to 20% w/v based on the total volume of solution of sulfamethoxazole or sulfadoxine (c) from 3 to 5% w/v based on the total volume of solution of trimethoprim and (d) from 60 to 80% w/v based on the total volume of solution of 2-pyrrolidone, the solution having a pH of from 5 to 9.5.
Claim 3
Dependent Claim
12 words
A solution as claimed in claim 1 wherein the sulfonamide is sulfamethoxazole.
Claim 4
Dependent Claim
12 words
A solution as claimed in claim 1 wherein the sulfonamide is sulfadoxine.
Claim 5
Dependent Claim
38 words
> A solution as claimed in any one of the preceding claims comprising polyvinylpyrrolidone having an m.w. of from 5000 - 100,000 in a concentration of from 1 to 5% w/v based on the total volume of solution.
Claim 6
Dependent Claim
81 words
A sulfonamide solution comprising (a) water (b) about 20% w/v based on the total volume of solution of sulfamethoxazole, (c) about 4% w/v based on the total volume of solution of trimethoprim, (d) from 60 to 80% w/v based on the total volume of solution of 2-pyrrolidone, and (e) from 1 to 5% w/v based on the total volume of solution of polyvinylpyrrolidone having an m.w. of from 5000 - 100,000, the solution having a pH of from 7 to 9.5.
Claim 7
Dependent Claim
81 words
A sulfonamide solution comprising (a) water (b) about 20% w/v based on the total volume of solution of sulfamethoxazole, (c) about 4% w/v based on the total volume of solution of trimethoprim, (d) from 60 to 80% w/v based on the total volume of solution of 2-pyrrolidone, and (e) from 1 to 5% w/v based on the total volume of solution of polyvinylpyrrolidone having an m.w. of from 5000 - 100,000, the solution having a pH of from 7 to 9.5.
Claim 8
Dependent Claim
81 words
A sulfonamide solution comprising (a) water (b) about 20% w/v based on the total volume of solution of sulfadoxine (c) about 4% w/v based on the total volume of solution of trimethoprim, (d) from 60% to 80% w/v based on the total volume of solution of 2-pyrrolidone, and (e) from 1 to 5% w/v based on the total volume of solution of polyvinylpyrrolidone having an m.w. of from 5000 - 100,000, the solution having a pH of from 7 to 9.5.
Claim 9
Dependent Claim
81 words
A sulfonamide solution comprising (a) water (b) about 20% w/v based on the total volume of solution of sulfadoxine (c) about 4% w/v based on the total volume of solution of trimethoprim, (d) from 60% to 80% w/v based on the total volume of solution of 2-pyrrolidone, and (e) from 1 to 5% w/v based on the total volume of solution of polyvinylpyrrolidone having an m.w. of from 5000 - 100,000, the solution having a pH of from 7 to 9.5.
References Cited (Backward Citations)
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