149261-51-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 149261-51-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,2,6 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 149261-51:
(8*1)+(7*4)+(6*9)+(5*2)+(4*6)+(3*1)+(2*5)+(1*1)=138
138 % 10 = 8
So 149261-51-8 is a valid CAS Registry Number.
149261-51-8Relevant articles and documents
Process for the preparation of arylidine dyes using an active methylene compound
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, (2008/06/13)
A process for the preparation of arylidene dyes comprises the reaction of an aromatic amine with an enolate salt of a formylated active methylene compound in the presence of a sulfonyl halide compound. An enol sulfonate is postulated as a reactive interme
