129178-93-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129178-93-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,1,7 and 8 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 129178-93:
(8*1)+(7*2)+(6*9)+(5*1)+(4*7)+(3*8)+(2*9)+(1*3)=154
154 % 10 = 4
So 129178-93-4 is a valid CAS Registry Number.