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84445-85-2

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84445-85-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84445-85-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,4,4 and 5 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 84445-85:
(7*8)+(6*4)+(5*4)+(4*4)+(3*5)+(2*8)+(1*5)=152
152 % 10 = 2
So 84445-85-2 is a valid CAS Registry Number.

84445-85-2Relevant 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

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