129783-20-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129783-20-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,7,8 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129783-20:
(8*1)+(7*2)+(6*9)+(5*7)+(4*8)+(3*3)+(2*2)+(1*0)=156
156 % 10 = 6
So 129783-20-6 is a valid CAS Registry Number.