128971-93-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128971-93-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,7 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128971-93:
(8*1)+(7*2)+(6*8)+(5*9)+(4*7)+(3*1)+(2*9)+(1*3)=167
167 % 10 = 7
So 128971-93-7 is a valid CAS Registry Number.