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| CAS No.: | 3973-08-8 |
|---|---|
| Name: | 4-Thiazolecarboxylic acid |
| Molecular Structure: | |
|
|
|
| Formula: | C4H3NO2S |
| Molecular Weight: | 129.139 |
| Synonyms: | 1,3-Thiazole-4-carboxylicacid;NSC 195467; |
| EINECS: | 628-056-7 |
| Density: | 1.525 g/cm3 |
| Melting Point: | 195-199 °C(lit.) |
| Boiling Point: | 319.2 °C at 760 mmHg |
| Flash Point: | 146.9 °C |
| Hazard Symbols: |
Xi
|
| Risk Codes: | 43 |
| Safety: | 36/37 |
| PSA: | 78.43000 |
| LogP: | 0.84130 |

4-thiazolecarboxylate methyl ester


Thiazole-4-carboxylic acid

| Conditions | Yield |
|---|---|
| With sodium hydroxide for 1h; Reflux; | 96.1% |

| Conditions | Yield |
|---|---|
| Stage #1: ethyl Bromopyruvate; thiourea In water at 40℃; for 5h; Stage #2: With hydrogenchloride; sodium nitrite In water for 2h; Temperature; Concentration; | 94% |

| Conditions | Yield |
|---|---|
| at 30℃; for 16h; Pseudomonas putida ATCC 33015; | 80% |
| With potassium permanganate In water at 55℃; for 22h; Reagent/catalyst; Temperature; | 70.2% |

bromopyruvic acid


formamide


Thiazole-4-carboxylic acid

| Conditions | Yield |
|---|---|
| Stage #1: formamide With tetraphosphorus decasulfide In tetrahydrofuran at 30℃; for 3h; Stage #2: bromopyruvic acid In tetrahydrofuran at 40 - 50℃; for 3h; | 22% |

1,2,3,4-tetrahydroisoquinoline


thiazole 2,5-dicarboxylic acid


Thiazole-4-carboxylic acid

| Conditions | Yield |
|---|---|
| at 153.9℃; Rate constant; sowie bei 164.7.Decarboxylation; |

ethyl 2-bromothiazole-4-carboxylate


Thiazole-4-carboxylic acid

| Conditions | Yield |
|---|---|
| With potassium hydroxide anschliessend Hydrieren an Raney-Nickel; |

2-propionyl-thiazole-4-carboxylic acid


Thiazole-4-carboxylic acid

| Conditions | Yield |
|---|---|
| With sulfuric acid at 180℃; |

2-propionyl-thiazole-4-carboxylic acid

A

Thiazole-4-carboxylic acid

B

thiazole-2,4-dicarboxylic acid

| Conditions | Yield |
|---|---|
| With sodium hydroxide; potassium permanganate |

thiazole-2,4-dicarboxylic acid


Thiazole-4-carboxylic acid

| Conditions | Yield |
|---|---|
| at 140 - 144℃; Decarboxylation; |
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IUPAC Name: 1,3-thiazole-4-carboxylic acid (3973-08-8)
Synonyms: 1,3-Thiazole-4-carboxylic acid ; Akos bb-9161 ; 4-Carboxythiazole ; 4-Thiazolecarboxylic acid ; Timtec-bb sbb010166 ; Thiazole-4-carboxylic acid ; 4-Thiazolecarboxylic acid 3973-8-8 ; 1,3-Thiazole-4-carboxylic acid 3973-8-8
CAS: 3973-08-8
MF: C4H3NO2S
MW: 129.14
MS:![]()
Product Categories: blocks ; Carboxes ; Thiazoles ; Sulphur Derivatives ; Carboxylic Acids ; Thiazoles, Isothiazoles &Benzothiazoles ; Carboxylic Acids ; Thiazoles, Isothiazoles & Benzothiazoles ; Building Blocks ; Heterocyclic Building Blocks
Mol File: 3973-08-8.mol
Surface Tension: 72 dyne/cm Density: 1.525 g/cm3
Flash Point: 146.9 °C Enthalpy of Vaporization: 59.21 kJ/mol
Boiling Point: 319.2 °C at 760 mmHg Vapour Pressure: 0.000143 mmHg at 25°C
MP:195-199 °C(lit.)
1.4-Thiazolecarboxylic acid (93973-08-8) is an intermediate of fungicide thiabendazole.
2.4-Thiazolecarboxylic acid (93973-08-8) is used as a medicine, pesticide intermediates, organic synthesis reagents .
Its preparation method is to use formamide with P2S5 in ethylene glycol dimethyl ether (CH3OCH2CH2OCH3) reaction to obtain thiocarboxamide (HCSNH2), and then, halogenate with pyruvate for product.
Hazard Codes: Xi ![]()
Risk Statements: 43
43: 4-Thiazolecarboxylic acid (93973-08-8) may cause sensitization by skin contact
Safety Statements : 36/37
36/37: Wear suitable protective clothing and gloves
WGK Germany: 3
4-Thiazolecarboxylic acid (93973-08-8) is a colorless solid, not dissolve in water.