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81490-41-7

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81490-41-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81490-41-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,4,9 and 0 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81490-41:
(7*8)+(6*1)+(5*4)+(4*9)+(3*0)+(2*4)+(1*1)=127
127 % 10 = 7
So 81490-41-7 is a valid CAS Registry Number.

81490-41-7Downstream Products

81490-41-7Relevant articles and documents

Synthesis of Some Benzofuranylpyridones from Khellin and Visnagin

Hismat, Orchidee H.,Zohair, Madiha M. Y.,Soliman, Fekria M. A.

, p. 1001 - 1003 (2007/10/02)

4-Methoxy-(Ia), 6-hydroxy-4,7-dimethoxy-(Ic), 4,6-dimethoxy-(Ib) and 4,6,7-trimethoxy-(Id)-5-acetoacetylbenzofurans react with cyanoacetamide, chloroacetamide and phenylacetamide to form the corresponding 3-cyano, 3-chloro- and 3-phenyl-4-methyl-2(1H)-pyridone derivatives (II, IV and V).Compounds (IIIa,b) are obtained from the corresponding IIa,b by reacting with methylmagnesium iodide and VIb by reaction of IIb with conc.H2SO4.

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