85721-83-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 85721-83-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,7,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 85721-83:
(7*8)+(6*5)+(5*7)+(4*2)+(3*1)+(2*8)+(1*3)=151
151 % 10 = 1
So 85721-83-1 is a valid CAS Registry Number.
85721-83-1Relevant articles and documents
Nucleophilic Acylation of Benzimidazole
Khristich, B. I.,Simonov, A. M.,Shepelenko, E. N.,Yatsimirskii, V. A.
, p. 87 - 90 (2007/10/02)
Conditions that make it possible to realize the direct C(2) acylation of benzimidazole and some of its derivatives were found.It is shown that bis products, which are converted to 2-acylbenzimidazoles upon heating to 140-200 deg C with acyl halides in the