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81819-94-5

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81819-94-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81819-94-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,1 and 9 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81819-94:
(7*8)+(6*1)+(5*8)+(4*1)+(3*9)+(2*9)+(1*4)=155
155 % 10 = 5
So 81819-94-5 is a valid CAS Registry Number.

81819-94-5Downstream Products

81819-94-5Relevant articles and documents

Reactions of 3-Chloropyridazines with Some Nucleophilic Reagents

Moustafa, A. H.,Kaddah, A. M.,Shams, N. A.

, p. 1084 - 1086 (2007/10/02)

3-Chloro-6-phenylpyridazine (1a) and its 4-methyl derivative (1b) react with sodamide, hydrazines, 3-aminopyridazines and phenothiazine in polar and non-polar solvents as well as by fusion to give different products.The structures assigned to the products have been confirmed by their IR spectra.

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