THIOPHENE-3,4-DICARBOXYLIC ACID

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THIOPHENE-3,4-DICARBOXYLIC ACID Basic information

Product Name: THIOPHENE-3,4-DICARBOXYLIC ACID

Synonyms: 3,4-THIOPHENEDICARBOXYLIC ACID;THIOPHENE-3,4-DICARBOXYLIC ACID;3,4-Thiophenedicarboxylic acid,97%;3,4-Dicarboxythiophene;3,4-Thiophenedicarboxylic acid ,98%;THIOPHENE-3,4-DICARBOXYLATE;100G,500G,1KG,10KG;THIOPHENE-3,4-DICARBOXY

CAS: 4282-29-5

MF: C6H4O4S

MW: 172.16

EINECS:

Product Categories: Building Blocks;Carboxy;Acids and Derivatives;Heterocycles;API intermediates;Thiophene

Mol File: 4282-29-5.mol

THIOPHENE-3,4-DICARBOXYLIC ACID Structure

THIOPHENE-3,4-DICARBOXYLIC ACID Chemical Properties

Melting point 227-231 °C

Boiling point 272.46°C (rough estimate)

density 1.473 (estimate)

refractive index 1.5500 (estimate)

storage temp. Keep in dark place,Sealed in dry,Room Temperature

solubility soluble in Methanol

pka 3.36±0.20(Predicted)

form Crystalline Powder

color Yellow to beige-pinkish or light brown

λmax 240nm(H2O)(lit.)

InChI InChI=1S/C6H4O4S/c7-5(8)3-1-11-2-4(3)6(9)10/h1-2H,(H,7,8)(H,9,10)

InChIKey ZWWLLYJRPKYTDF-UHFFFAOYSA-N

SMILES C1SC=C(C(O)=O)C=1C(O)=O

Safety Information

Hazard Codes Xi

Risk Statements 36/37/38

Safety Statements 24/25

WGK Germany 3

HazardClass IRRITANT

HS Code 29349990

MSDS Information

Provider Language

ACROS English

THIOPHENE-3,4-DICARBOXYLIC ACID Usage And Synthesis

Chemical Properties yellow to beige-pinkish or light brown crystalline

Uses Thiophene-3,4-dicarboxylic Acid is used in preparation of dibromo thienofuran dione.

Uses Synthetic precursor for organic electronics materials.

THIOPHENE-3,4-DICARBOXYLIC ACID Preparation Products And Raw materials

Raw materials N,N-Dimethylformamide-->Ferric chloride-->Copper(I) Cyanide-->3,4-Dibromothiophene-->2-Butenedioic acid, 2,3-dimethyl-, dimethyl ester, (2Z)--->diethyl 2-(diethoxymethyl)butanedioate-->2-(Diethoxymethyl)-3-formylbutanedioic acid diethyl ester-->3,4-Diiodothiophene-->3,4-Thiophenedicarboxylic acid, diMethyl ester-->DIETHYL FORMYLSUCCINATE-->2,3-Dimethylmaleic anhydride-->3,4-DICYANOTHIOPHENE,-->3,4-Thiophenedicarboxylic acid, diethyl ester-->3,4-Thiophenedicarboxylic acid, 2,5-dihydro-, dimethyl ester-->CARBON DIOXIDE

Preparation Products 1,3-Dibromo-5-octyl-4H-thieno[3,4-c]pyrrole-4,6(5H)-dione-->4-BROMOTHIOPHENE-3-CARBOXYLIC ACID