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210639-67-1

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210639-67-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 210639-67-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,0,6,3 and 9 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 210639-67:
(8*2)+(7*1)+(6*0)+(5*6)+(4*3)+(3*9)+(2*6)+(1*7)=111
111 % 10 = 1
So 210639-67-1 is a valid CAS Registry Number.

210639-67-1Downstream Products

210639-67-1Relevant articles and documents

Chemistry of the heteroanalogs of isoflavones. 20. Benzimidazole analogs of isoflavones

Frasinyuk,Gorbulenko,Khilya

, p. 1078 - 1085 (1997)

3-(2-Benzimidazolyl)chromones with electron-donating and electron-withdrawing substituents and also chromones unsubstituted at position 2 were obtained by the reaction of alkyl-α-(2-benzimidazolyl)-2,4-dihydroxy-5-acetophenones with carboxylic acid anhydrides and chlorides. Reactions with cleavage and with retention of the pyrone ring were carried out. 1998 Plenum Publishing Corporation.

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