13191-43-0 Usage
General Description
β-thiophen carboxylic anhydride, also known as 2,5-thiophenedicarboxylic anhydride, is a chemical compound with the molecular formula C8H4O3S. It is a cyclic anhydride derived from thiophene carboxylic acid and is often used in organic synthesis as a building block for the production of various organic compounds, such as pharmaceuticals and polymers. It is a white to off-white crystalline powder that is insoluble in water but soluble in organic solvents. β-thiophen carboxylic anhydride is a versatile reagent with a wide range of synthetic applications, including in the preparation of pharmaceutical intermediates, agrochemicals, and functional materials. It is important to handle this compound with care, as it can be harmful if ingested, inhaled, or in contact with the skin or eyes.
Check Digit Verification of cas no
The CAS Registry Mumber 13191-43-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,1,9 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 13191-43:
(7*1)+(6*3)+(5*1)+(4*9)+(3*1)+(2*4)+(1*3)=80
80 % 10 = 0
So 13191-43-0 is a valid CAS Registry Number.
13191-43-0Relevant articles and documents
Palladium-promoted One-step Synthesis of Aromatic Acid Anhydrides from Aromatic Compounds with Carbon Monoxide
Fujiwara, Yuzo,Kawata, Itaru,Kawauchi, Tomio,Taniguchi, Hiroshi
, p. 132 - 133 (2007/10/02)
The one-step synthesis of aromatic acid anhydrides from aromatic compounds such as benzene, toluene, anisole, chlorobenzene, furan, and thiophen has been carried out using carbon monoxide, 1,2-dibromoethane, and palladium acetate
