3,4-Dimethylthieno(2,3-b)thiophene-2,5-

3,4-Dimethylthieno(2,3-b)thiophene-2,5- - Names and Identifiers

Name	3,4-Dimethylthieno(2,3-b)thiophene-2,5-dicarboxylic acid
Synonyms	3,4-Dimethylthieno(2,3-b)thiophene-2,5- 3,4-Dimethylthieno(2,3-b)thiophene-2,5-dicarboxylic acid 3,4-DIMETHYLTHIENO[2,3-B]THIOPHENE-2,5-DICARBOXYLIC ACID 3,4-dimethylthieno[2,3-b]thiophene-2,5-dicarboxylic acid Thieno[2,3-b]thiophene-2,5-dicarboxylic acid, 3,4-dimethyl-
CAS	175202-55-8
EINECS	200-258-5
InChI	InChI=1/C10H8O4S2/c1-3-5-4(2)7(9(13)14)16-10(5)15-6(3)8(11)12/h1-2H3,(H,11,12)(H,13,14)

3,4-Dimethylthieno(2,3-b)thiophene-2,5- - Physico-chemical Properties

Molecular Formula	C10H8O4S2
Molar Mass	256.3
Density	1.600
Melting Point	>360°C
Boling Point	538.0±45.0 °C(Predicted)
Flash Point	279.2°C
Vapor Presure	2.08E-12mmHg at 25°C
pKa	2.70±0.30(Predicted)
Storage Condition	Keep in dark place,Sealed in dry,Room Temperature
Refractive Index	1.736

3,4-Dimethylthieno(2,3-b)thiophene-2,5- - Risk and Safety

Risk Codes	36/37/38 - 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. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection.

3,4-Dimethylthieno(2,3-b)thiophene-2,5- - Introduction

3,4-dimethylthieno (2,3-b)thiophene-2,5-dicarboxylic acid is an organic compound with the chemical formula C11H8O4S. Here are some information about its nature, use, formulation and safety:

Nature:
3,4-dimethylthieno (2,3-b)thiophene-2,5-dicarboxylic acid is a solid with a white to light yellow color. It has a relatively high melting and boiling point and can be dissolved in some organic solvents, such as ethanol and dichloromethane. The structure of this compound contains a sulfur-containing heterocycle and a carboxylic acid functional group.

Use:
3,4-dimethylthieno (2,3-b)thiophene-2,5-dicarboxylic acid is commonly used as an intermediate in organic synthesis. It can be used to prepare some compounds with important biological activities and pharmacological properties. In addition, it can also be used as a raw material for organic dyes, pigments and photosensitive materials.

Method:
The synthesis method of 3,4-thiophene-2 thieno(2,3-b) and 5-dicarboxylic acid is relatively complicated, and generally needs to be synthesized through multi-step reactions. One of the common synthesis methods is through the sulfuric acid method, using 2,4-disulfate dimethyl ester and dimethyl ester as raw materials, under acidic conditions for the ring reaction to obtain the target product.

Safety Information:
Security information regarding 3,4-dimethylthieno (2,3-b)thiophene-2,5-dicarboxylic acid is currently limited. As this compound has not been widely commercialized, relevant toxicity and safety documentation may not be readily available. In general, the handling of such compounds should follow the laboratory's safe practices, wear appropriate protective equipment, and avoid contact with skin, eyes and inhalation of its dust. Any operation involving this compound should be carried out under proper ventilation. If you need more safety information, it is recommended to consult the relevant chemical information or obtain a detailed safety data sheet from the supplier.

Last Update：2024-04-10 22:29:15