420134-77-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 420134-77-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,0,1,3 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 420134-77:
(8*4)+(7*2)+(6*0)+(5*1)+(4*3)+(3*4)+(2*7)+(1*7)=96
96 % 10 = 6
So 420134-77-6 is a valid CAS Registry Number.