DE69406541D1 - Farbkontrolle und stabilitätsverbesserungen in acetaminophen - Google Patents
Farbkontrolle und stabilitätsverbesserungen in acetaminophenInfo
- Publication number
- DE69406541D1 DE69406541D1 DE69406541T DE69406541T DE69406541D1 DE 69406541 D1 DE69406541 D1 DE 69406541D1 DE 69406541 T DE69406541 T DE 69406541T DE 69406541 T DE69406541 T DE 69406541T DE 69406541 D1 DE69406541 D1 DE 69406541D1
- Authority
- DE
- Germany
- Prior art keywords
- acetaminophen
- color control
- stability improvement
- stability
- improvement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/22—Separation; Purification; Stabilisation; Use of additives
- C07C231/24—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5473193A | 1993-04-29 | 1993-04-29 | |
US08/105,724 US5399760A (en) | 1993-04-29 | 1993-08-11 | Color control & stability in acetaminophen |
PCT/US1994/002615 WO1994025428A1 (en) | 1993-04-29 | 1994-03-10 | Color control and stability improvement in acetaminophen |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69406541D1 true DE69406541D1 (de) | 1997-12-04 |
DE69406541T2 DE69406541T2 (de) | 1998-03-26 |
Family
ID=26733428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69406541T Expired - Lifetime DE69406541T2 (de) | 1993-04-29 | 1994-03-10 | Farbkontrolle und stabilitätsverbesserungen in acetaminophen |
Country Status (7)
Country | Link |
---|---|
US (1) | US5399760A (de) |
EP (1) | EP0701548B1 (de) |
JP (1) | JP3856818B2 (de) |
CN (1) | CN1046702C (de) |
DE (1) | DE69406541T2 (de) |
ES (1) | ES2108454T3 (de) |
WO (1) | WO1994025428A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104529799A (zh) * | 2014-11-26 | 2015-04-22 | 南京化学试剂有限公司 | 一种制备2-羟基氯乙酰苯胺的方法 |
WO2022113098A1 (en) * | 2020-11-24 | 2022-06-02 | Laxmi Organic Industries Limited | An environment-friendly process for selective acylation of aminophenol |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113150A (en) * | 1961-10-06 | 1963-12-03 | Sinclair Research Inc | Preparation of N-acetyl-p-aminophenol |
US3748358A (en) * | 1970-06-16 | 1973-07-24 | Mallinckrodt Chemical Works | Method of purification of n-acetyl-p-aminophenol |
US3781354A (en) * | 1972-06-12 | 1973-12-25 | Du Pont | Process for purification of n-acetyl-p-aminophenol |
US5155269A (en) * | 1984-01-30 | 1992-10-13 | Mallinckrodt | Purification of p-aminophenol compositions and direct conversion to N-acetyl-p-aminophenol |
US4524217A (en) * | 1984-06-08 | 1985-06-18 | Celanese Corporation | Process for producing N-acyl-hydroxy aromatic amines |
US4607125A (en) * | 1985-04-08 | 1986-08-19 | Celanese Corporation | Process for producing hydroxy aromatic ketones |
FR2672212B1 (fr) * | 1991-02-04 | 1993-05-28 | Lille Ii Universite | Cristaux de paracetamol pour compression directe, procede de preparation de ces cristaux et comprime obtenu avec ces cristaux. |
-
1993
- 1993-08-11 US US08/105,724 patent/US5399760A/en not_active Expired - Lifetime
-
1994
- 1994-03-10 EP EP94915761A patent/EP0701548B1/de not_active Expired - Lifetime
- 1994-03-10 WO PCT/US1994/002615 patent/WO1994025428A1/en active IP Right Grant
- 1994-03-10 DE DE69406541T patent/DE69406541T2/de not_active Expired - Lifetime
- 1994-03-10 CN CN94191919A patent/CN1046702C/zh not_active Expired - Lifetime
- 1994-03-10 JP JP52424394A patent/JP3856818B2/ja not_active Expired - Lifetime
- 1994-03-10 ES ES94915761T patent/ES2108454T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
WO1994025428A1 (en) | 1994-11-10 |
JP3856818B2 (ja) | 2006-12-13 |
EP0701548A1 (de) | 1996-03-20 |
CN1046702C (zh) | 1999-11-24 |
EP0701548B1 (de) | 1997-10-29 |
DE69406541T2 (de) | 1998-03-26 |
EP0701548A4 (de) | 1996-05-01 |
ES2108454T3 (es) | 1997-12-16 |
CN1121708A (zh) | 1996-05-01 |
JPH08509495A (ja) | 1996-10-08 |
US5399760A (en) | 1995-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |