129973-17-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129973-17-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,9,7 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 129973-17:
(8*1)+(7*2)+(6*9)+(5*9)+(4*7)+(3*3)+(2*1)+(1*7)=167
167 % 10 = 7
So 129973-17-7 is a valid CAS Registry Number.