82344-53-4 Usage
Physical appearance
Yellow to brown crystalline powder
Use
Intermediate in the synthesis of dyes, pigments, and pharmaceuticals
Synthesis
Nitration of 2-(N,N-diacetylamino)toluene followed by acetylation
Toxicity
Toxic if ingested or inhaled
Hazard
Can cause irritation to the skin and eyes
Classification
Hazardous substance
Safety protocols
Should be stored and handled in accordance with proper safety protocols
Check Digit Verification of cas no
The CAS Registry Mumber 82344-53-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,3,4 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 82344-53:
(7*8)+(6*2)+(5*3)+(4*4)+(3*4)+(2*5)+(1*3)=124
124 % 10 = 4
So 82344-53-4 is a valid CAS Registry Number.
82344-53-4Relevant articles and documents
Synthesis of N-Acetylbenzimidazole Derivatives
Tanaka, Kenjiro,Shimazaki, Michiko,Murakami, Yasuoki
, p. 2714 - 2722 (2007/10/02)
For the structure determination of thiazolobenzimidazol-3(2H)-one derivatives (2 or 3) they were converted to the corresponding 1-acetylbenzimidazoles (4) by desulfurization.The latter compounds (4) were alternatively prepared by the cyclization of 2-aminoacetanilide derivatives (5) with CS2 in dimethylformamide (DMF), followed by desulfurization with Raney Ni.However, the reactions of 5 with ethyl orthoformate/H2SO4 in DMF gave a mixture of 4 and its acetyl-rearranged product (7).Keywords-acetyl group; rearrangement; thiazolobenzimidazol-3(2H)-one; N-acetylbenzimidazoles; ethyl orthoformate; carbon disulfide; desulfurization
