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289499-66-7

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289499-66-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 289499-66-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,9,4,9 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 289499-66:
(8*2)+(7*8)+(6*9)+(5*4)+(4*9)+(3*9)+(2*6)+(1*6)=227
227 % 10 = 7
So 289499-66-7 is a valid CAS Registry Number.

289499-66-7Downstream Products

289499-66-7Relevant articles and documents

Microwave assisted condensation reactions of 2-aryl hydrazonopropanals with nucleophilic reagents and dimethyl acetylenedicarboxylate

Al-Zaydi, Khadijah M.,Borik, Rita M.

, p. 2061 - 2079 (2008/02/08)

The reaction of methyl ketones 1a-g with dimethylformamide dimethylacetal (DMFDMA) afforded the enaminones 2a-g, which were coupled with diazotized aromatic amines 3a,b to give the corresponding aryl hydrazones 6a-h. Condensation of compounds 6a-h with so

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