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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
China
