1219458-45-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1219458-45-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,4,5 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1219458-45:
(9*1)+(8*2)+(7*1)+(6*9)+(5*4)+(4*5)+(3*8)+(2*4)+(1*5)=163
163 % 10 = 3
So 1219458-45-3 is a valid CAS Registry Number.
1219458-45-3Relevant articles and documents
Azo dyes
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Page/Page column 2-3, (2010/04/25)
The azo dyes relate to thiophene azo dyes of the general formula: where R1 is Cyano or C1-C5 alkoxy carbonyl; R2 is hydrogen, halogene, C1-C2 alkyl, phenyl, or substituted phenyl; and R3 is C1-C5 alkoxy carbonyl, C1-C4 alkanoyl, benzoyl, phenyl, alkyl substituted phenyl, or alkoxy phenyl; or R2 and R3 are fused cycloalkane with C3-C5.
