5-Carboxy-1,3-dimethyl-1H-thieno[2,3-c]pyrazole

5-Carboxy-1,3-dimethyl-1H-thieno[2,3-c]pyrazole - Names and Identifiers

Name	1,3-dimethyl-1H-thieno[2,3-c]pyrazole-5-carboxylic acid
Synonyms	5-Carboxy-1,3-dimethyl-1H-thieno[2,3-c]pyrazole 1,3-dimethylthieno[2,3-c]pyrazole-5-carboxylic acid 1,3-dimethyl-1H-thieno[2,3-c]pyrazole-5-carboxylic acid 1,3-DIMETHYL-1H-THIENO[2,3-C]PYRAZOLE-5-CARBOXYLIC ACID 1H-Thieno[2,3-c]pyrazole-5-carboxylic acid, 1,3-dimethyl-
CAS	25252-46-4
InChI	InChI=1/C8H8N2O2S/c1-4-5-3-6(8(11)12)13-7(5)10(2)9-4/h3H,1-2H3,(H,11,12)

5-Carboxy-1,3-dimethyl-1H-thieno[2,3-c]pyrazole - Physico-chemical Properties

Molecular Formula	C8H8N2O2S
Molar Mass	196.23
Density	1.54±0.1 g/cm3(Predicted)
Melting Point	316-317
Boling Point	401.5±40.0 °C(Predicted)
Flash Point	196.6°C
Vapor Presure	3.63E-07mmHg at 25°C
pKa	3.44±0.30(Predicted)
Storage Condition	2-8°C
Refractive Index	1.724

5-Carboxy-1,3-dimethyl-1H-thieno[2,3-c]pyrazole - Risk and Safety

Hazard Symbols	Xi - Irritant
Risk Codes	R36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection
HS Code	29331990
Hazard Note	Irritant

5-Carboxy-1,3-dimethyl-1H-thieno[2,3-c]pyrazole - Introduction

1,3-dimethyl-1h-thieno [2,3-c]pyrazole-5-carboxylic acid is an organic compound with the chemical formula C10H9N3O2S. The following is an introduction to its nature, use, preparation and safety information:

Nature:
-Appearance: 1,3-dimethyl-1h-thieno [2,3-c]pyrazole-5-carboxylic acid is a white to light yellow crystalline solid.
-Melting point: about 175-180 degrees Celsius.
-Solubility: Soluble in most organic solvents such as chloroform, methanol, dichloromethane, etc., slightly soluble in water.
-Chemical properties: 1,3-dimethyl-1h-thieno [2,3-c]pyrazole-5-carboxylic acid is a weak acid that is acidic in water.

Use:
1,3-dimethyl-1h-thieno [2,3-c]pyrazole-5-carboxylic acid is commonly used in organic synthesis, especially as a useful intermediate. It can be used to synthesize various organic compounds, such as medicines, pesticides, photosensitive chemicals, etc.

Method:
1,3-dimethyl-1h-thieno [2,3-c]pyrazole-5-carboxylic acid has many preparation methods. A common method is through the oxidation and esterification of p-toluene boric acid and thioacetamide Generate 1,3-dimethyl-1H-thieno[2,3-c]pyrazole-5-carboxylic acid.

Safety Information:
-1,3-dimethyl-1h-thieno [2,3-c]pyrazole-5-carboxylic acid has no obvious toxicity or danger under normal use conditions, but it still needs to be operated with caution. Avoid contact with skin, eyes and mucous membranes. When in use, wear appropriate protective equipment such as gloves, goggles, and lab coats.
-Store the 1,3-dimethyl-1h-thieno [2,3-c]pyrazole-5-carboxylic acid, away from ignition and oxidizing agents.
-When handling or disposing of waste, follow local regulations to dispose of it properly.

Last Update：2024-04-09 02:00:44