656240-24-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 656240-24-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,5,6,2,4 and 0 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 656240-24:
(8*6)+(7*5)+(6*6)+(5*2)+(4*4)+(3*0)+(2*2)+(1*4)=153
153 % 10 = 3
So 656240-24-3 is a valid CAS Registry Number.
656240-24-3Relevant articles and documents
ANIONIC MONOAZO DYES
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Page 8, (2010/11/30)
Anionic monoazo dyes of the formula (1) in which A represents a 1- or 2-naphthyl residue, which is substituted by a total of one or two sulphonic and/or carboxylic acid groups, R1 represents hydrogen or C1-C4alkyl, each D
