4282-34-2 Usage
General Description
2,5-Thiophenedicarboxylic acid dimethyl ester, also known as 2,5-dimethoxycarbonylthiophene, is a chemical compound with the molecular formula C8H8O4S. The exact structure of this ester consists of a thiophene ring, a five-membered aromatic ring containing one sulfur atom, substituted at the 2 and 5 positions with dicarboxylic acid dimethyl ester groups. It is known for being light-sensitive and highly reactive. 2,5-Thiophenedicarboxylic acid dimethyl ester is used in a wide range of scientific research and chemical synthesis applications due to its unique chemical properties and reactions. Additionally, its pharmacological and toxicological properties are crucial for the medical and pharmaceutical fields.
Check Digit Verification of cas no
The CAS Registry Mumber 4282-34-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,8 and 2 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4282-34:
(6*4)+(5*2)+(4*8)+(3*2)+(2*3)+(1*4)=82
82 % 10 = 2
So 4282-34-2 is a valid CAS Registry Number.
4282-34-2Relevant articles and documents
Synthesis of 2-thiophenecarboxylic and 2,5-thiophenedicarboxylic acid esters via the reaction of thiophenes with the CCl4-ROH reagent in the presence of vanadium, iron, and molybdenum catalysts
Khusnutdinov,Shchadneva,Baiguzina,Mukminov,Mayakova,Smirnov,Dzhemilev
experimental part, p. 471 - 478 (2010/03/31)
2-Thiophenecarboxylic and 2,5-thiohenedicarboxylic acid esters were synthesized via the reaction of thiophene with the CCl4-ROH-catalyst system, with a total yield of 44-85%. A possible reaction scheme includes the successive steps of alkylation of thiophene with carbon tetrachloride, leading to 2-trichloromethylthiophene, and alcoholysis of the product giving the corresponding 2-thiophenecarboxylate. The best catalysts for this reaction are VO(acac)2, Fe(acac)3, and Mo(CO)6.
