3-METHYLISOXAZOLE-5-CARBOXYLIC ACID
Uses Application- Product Name
- 3-METHYLISOXAZOLE-5-CARBOXYLIC ACID
- CAS No.
- 4857-42-5
- Chemical Name
- 3-METHYLISOXAZOLE-5-CARBOXYLIC ACID
- Synonyms
- 5-Carboxy-3-methylisoxazole;3-methyl-5-isoxazolecarboxylate;3-Methylisoxazole-5-carboxylic acid;5-isoxazolecarboxylic acid, 3-methyl-;3-Methyl-1,2-oxazole-5-carboxylic acid;3-Methylisoxazole-5-carboxylic acid 97%;3-Methylisoxazole-5-carboxylic acid, >=97%;3-methylisoxazole-5-carboxylic acid(SALTDATA: FREE);3-METHYLISOXAZOLE-5-CARBOXYLIC ACID ISO 9001：2015 REACH;5-Carboxy-3-methylisoxazole, 3-Methyl-1,2-oxazole-5-carboxylic acid
- CBNumber
- CB8498838
- Molecular Formula
- C5H5NO3
- Formula Weight
- 127.1
- MOL File
- 4857-42-5.mol
3-METHYLISOXAZOLE-5-CARBOXYLIC ACID Property
- Melting point:
- 210-211 °C
- Boiling point:
- 307.8±22.0 °C(Predicted)
- Density
- 1.348±0.06 g/cm3(Predicted)
- RTECS
- NY2560000
- storage temp.
- Keep in dark place,Sealed in dry,Store in freezer, under -20°C
- form
- Solid
- pka
- 2.36±0.10(Predicted)
- color
- White to Almost white
- InChI
- InChI=1S/C5H5NO3/c1-3-2-4(5(7)8)9-6-3/h2H,1H3,(H,7,8)
- InChIKey
- HXIYCKAAQPHZBM-UHFFFAOYSA-N
- SMILES
- O1C(C(O)=O)=CC(C)=N1
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405Store locked up.
N-Bromosuccinimide Price
- Product number
- M2953
- Product name
- 3-Methylisoxazole-5-carboxylic Acid
- Purity
- >98.0%(GC)
- Packaging
- 1g
- Price
- $125
- Updated
- 2025/07/31
- Product number
- M218845
- Product name
- 3-Methylisoxazole-5-carboxylic Acid
- Packaging
- 100mg
- Price
- $60
- Updated
- 2021/12/16
- Product number
- M218845
- Product name
- 3-Methylisoxazole-5-carboxylic Acid
- Packaging
- 50mg
- Price
- $45
- Updated
- 2021/12/16
- Product number
- OR12419
- Product name
- 3-Methylisoxazole-5-carboxylic Acid
- Packaging
- 1g
- Price
- $34
- Updated
- 2021/12/16
- Product number
- J50917
- Product name
- 3-Methylisoxazole-5-carboxylic Acid
- Packaging
- 1g
- Price
- $35
- Updated
- 2021/12/16
3-METHYLISOXAZOLE-5-CARBOXYLIC ACID Chemical Properties,Usage,Production
Uses
3-Methylisoxazole-5-carboxylic acid is a carboxylic acid derivative, mainly used as a pharmaceutical intermediate.
Application
3-Methylisoxazole-5-carboxylic acid is an organic intermediate that can be prepared by first cyclizing acetaldehyde oxime and propargyl alcohol to prepare (3-methylisoxazole-5-yl)methanol, and then oxidizing it to obtain 3-methylisoxazole-5-carboxylic acid.
Synthesis
63366-79-0
4857-42-5
General procedure for the synthesis of 3-methylisoxazole-5-carboxylic acid from methyl 3-methyl-5-isoxazolecarboxylate: To a round bottom flask equipped with a magnetic stirrer was added a solution of methyl 3-methyl-5-isoxazolecarboxylate (900 mg, 5.8 mmol) in tetrahydrofuran (2.0 mL). Subsequently, a solution of sodium hydroxide (465 mg, 11.6 mmol) in water (2 mL) was added dropwise to the reaction system and methanol (4 mL) was added. The reaction mixture was stirred at room temperature for 18-20 hours under argon protection. Upon completion of the reaction, the mixture was transferred to a partition funnel and the pH was adjusted to 2 with 1 N hydrochloric acid solution. the aqueous phase was extracted with ethyl acetate (3 x 35 mL), the organic phases were combined and washed with saturated brine (50 mL), dried over anhydrous magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure to afford 3-methylisoxazole-5-carboxylic acid as a white solid (660 mg, 90% yield). The obtained product did not need further purification and could be used directly in the next reaction.
References
[1] Angewandte Chemie - International Edition, 2016, vol. 55, # 29, p. 8353 - 8357
[2] Angew. Chem., 2016, vol. 128, # 29, p. 8493 - 8497,5
[3] Patent: WO2006/91674, 2006, A1. Location in patent: Page/Page column 79
[4] European Journal of Medicinal Chemistry, 1992, vol. 27, # 6, p. 581 - 593
3-METHYLISOXAZOLE-5-CARBOXYLIC ACID Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 3-METHYLISOXAZOLE-5-CARBOXYLIC ACID manufacturers
- Product
- 3-METHYLISOXAZOLE-5-CARBOXYLIC ACID 4857-42-5
- Price
- US $1.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 10000KGS
- Release date
- 2020-01-02