4-(Hydroxyamino)-4-oxobutanoic acid
![4-(Hydroxyamino)-4-oxobutanoic acid Structure](CAS/GIF/4743-99-1.gif)
- CAS No.
- 4743-99-1
- Chemical Name:
- 4-(Hydroxyamino)-4-oxobutanoic acid
- Synonyms
- Tofacitinib Impurity 208;N-Hydroxysuccinamidic acid;4-(Hydroxyamino)-4-oxobutanoic acid;Butanoic acid, 4-(hydroxyamino)-4-oxo-;3-(Hydroxyaminocarbonyl)propionic acid
- CBNumber:
- CB02174169
- Molecular Formula:
- C4H7NO4
- Molecular Weight:
- 133.1
- MOL File:
- 4743-99-1.mol
- Modify Date:
- 2022/8/26 12:15:11
SAFETY
Risk and Safety Statements
Symbol(GHS) | ![]() GHS07 |
---|---|
Signal word | Warning |
Hazard statements | H315-H319-H335 |
Precautionary statements | P261-P305+P351+P338 |
4-(Hydroxyamino)-4-oxobutanoic acid Chemical Properties,Uses,Production
Preparation
To a refluxing solution of 5.0 gm (0.05 mole) of succinic anhydride in 100 ml of benzene is added a solution of 6.3 gm (0.05 mole) of O-ben- zylhydroxylamine in 20 ml of benzene. As soon as the addition has been completed, the reaction mixture is cooled, and the precipitated product is separated. Upon recrystallization from a benzene-methyl ethyl ketone mixture, 7.6 gm (68.2%) of N-benzyloxysuccinamic acid, m.p. 95-96°C isolated.
A suspension of 4.3 gm (0.0193 mole) of this intermediate and a stron- tium carbonate catalyst containing 5% palladium in methyl ethyl ketone is hydrogenated. Upon working up the reaction mixture, 1.45 gm (56.7%) of succinomonohydroxamic acid, m.p. 95-96°C is isolated.
4-(Hydroxyamino)-4-oxobutanoic acid Preparation Products And Raw materials
Raw materials
Preparation Products
4-(Hydroxyamino)-4-oxobutanoic acid Suppliers
Global( 20)Suppliers
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Hubei Qingbei Yunyan Pharmaceutical Technology Co., Ltd | 18162595016 | China | 9887 | 58 | Inquiry |
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3-(Hydroxyaminocarbonyl)propionic acid
4-(Hydroxyamino)-4-oxobutanoic acid
N-Hydroxysuccinamidic acid
Butanoic acid, 4-(hydroxyamino)-4-oxo-
Tofacitinib Impurity 208
4743-99-1