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Quality products?make an important contribution to long-term revenue and profitability. 5-Methyl-4-isoxazolecarboxylic acid Good Supplier In Bulk Supply High Purity 42831-50-5
1.What is the 5-Methyl-4-isoxazolecarboxylic acid ?
5-Methylisoxazole-4-carboxylic Acid (Leflunomide EP Impurity D) is an intermediate for synthesis of Leflunomide (L322750). Herbicidal activities towards Digitaria ciliaris.
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3788-94-1
2-ethoxymethylene-3-oxobutanoic acid ethyl ester
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42831-50-5
5-methyl-1,2-oxazole-4-carboxylic acid
| Conditions | Yield |
|---|---|
|
2-ethoxymethylene-3-oxobutanoic acid ethyl ester;
With
tri-n-propylamine; hydroxylamine hydrochloride;
In
ethanol;
at 3 ℃;
Flow reactor;
With
sulfuric acid;
In
water;
at 70 - 75 ℃;
for 3h;
Solvent;
Reagent/catalyst;
Temperature;
Concentration;
|
98.2%
|
|
Multi-step reaction
with
2
steps
1: 350 g / hydroxylamine hydrochloride, sodium acetate trihydrate / ethanol; H2
O / 0 °C
2: 270 g / conc. HCl / acetic acid; H2
O / 10 h / Heating
With
hydrogenchloride; hydroxylamine hydrochloride; sodium acetate;
In
ethanol; water; acetic acid;
|
|
|
Multi-step reaction
with
2
steps
1: hydroxylamine hydrochloride; sodium acetate / methanol; water / 0 - 20 °C
2: sulfuric acid / water / 20 h / 20 °C / Reflux
With
sulfuric acid; hydroxylamine hydrochloride; sodium acetate;
In
methanol; water;
|
|
|
Multi-step reaction
with
2
steps
2: sulfuric acid
With
sulfuric acid;
|
-
-
51135-73-0
5-methylisoxazole-4-carboxylic acid ethyl ester
-
-
42831-50-5
5-methyl-1,2-oxazole-4-carboxylic acid
| Conditions | Yield |
|---|---|
|
With
sulfuric acid;
In
o-tolyl acetic acid;
|
99.9%
|
|
With
hydrogenchloride; acetic acid;
In
water;
Reflux;
|
64.6%
|
|
With
sulfuric acid;
In
water;
at 20 ℃;
for 20h;
Reflux;
|
60%
|
|
With
hydrogenchloride; acetic acid;
for 1h;
Heating;
|
55%
|
|
With
sulfuric acid;
|
|
|
With
hydrogenchloride;
In
water; acetic acid;
for 10h;
Heating;
|
270 g
|
|
With
sulfuric acid;
In
water;
for 16h;
Heating / reflux;
|
|
|
With
hydrogenchloride;
|
|
|
In
hydrogenchloride;
|
|
|
In
hydrogenchloride;
|
|
|
In
hydrogenchloride;
|
|
|
With
sulfuric acid;
|
2.What is the CAS number for 5-Methyl-4-isoxazolecarboxylic acid ?
The CAS number of 5-Methyl-4-isoxazolecarboxylic acid is 42831-50-5.
More information of 5-Methyl-4-isoxazolecarboxylic acid 42831-50-5 are:
|
CAS?Number |
42831-50-5 |
|
Density |
1.348 g/cm3 |
|
Melting Point |
144-148 °C(lit.) |
|
Boiling Point |
308.3 °C at 760 mmHg |
|
Flash Point |
140.3 °C |
|
Vapor Pressure |
0.000297mmHg at 25°C |
|
HS CODE |
2934999090 |
|
PSA |
63.33000 |
|
LogP |
0.68120 |
|
Pka |
2.85±0.25(Predicted) |
3.What are another words for 5-Methyl-4-isoxazolecarboxylic acid ?
Synonyms?for?5-Methyl-4-isoxazolecarboxylic acid 42831-50-5:5-Methylisoxazole-4-carboxylicacid;
4.What is the molecular formula of 5-Methyl-4-isoxazolecarboxylic acid?
The chemical formula of ?5-Methyl-4-isoxazolecarboxylic acid is?C5H5NO3 which containing 5 Carbon atoms,5 Hydrogen atoms,1 Nitrogen atoms and 3 Oxygen atoms,and the molecular weight of??5-Methyl-4-isoxazolecarboxylic acid?is 127.1.
5.What is 5-Methyl-4-isoxazolecarboxylic acid (42831-50-5) used for?
InChI:InChI=1/C5H5NO3/c1-3-4(5(7)8)2-6-9-3/h2H,1H3,(H,7,8)/p-1
Relevant articles related to 5-Methyl-4-isoxazolecarboxylic acid:
|
Article |
Source |
|
Microchannel continuous preparation method of 5-methylisoxazole-4-formic acid |
- Paragraph 0029-0036, (2020/01/25) |
|
Synthesis and fungicidal activities of 1-(5-Methylisoxazoyl-4-carbonyl)-4- arylsulfonyl thiosemicarbazides |
Ye, Dong-Ju scheme or table, p. 1503 - 1506 (2012/04/10) |
6.Buy 5-Methyl-4-isoxazolecarboxylic acid with the best price .
Hangzhou Now Chemicals Co; Limited. is a quality supplier of 5-Methyl-4-isoxazolecarboxylic acid. Our main goal is customer satisfaction. Contact us to negotiate the best price for your business on 5-Methyl-4-isoxazolecarboxylic acid 42831-50-5.
