THIOPHENE-3,4-DICARBOXYLIC ACID CAS NO.4282-29-5

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
 

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
pka    3.36±0.20(Predicted)
form     Crystalline Powder
color     Yellow to beige-pinkish or light brown
λmax    240nm(H2O)(lit.)
InChIKey    ZWWLLYJRPKYTDF-UHFFFAOYSA-N

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