266689-70-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 266689-70-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,6,6,8 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 266689-70:
(8*2)+(7*6)+(6*6)+(5*6)+(4*8)+(3*9)+(2*7)+(1*0)=197
197 % 10 = 7
So 266689-70-7 is a valid CAS Registry Number.