129663-90-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129663-90-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,6,6 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 129663-90:
(8*1)+(7*2)+(6*9)+(5*6)+(4*6)+(3*3)+(2*9)+(1*0)=157
157 % 10 = 7
So 129663-90-7 is a valid CAS Registry Number.