126979-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 126979-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,6,9,7 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 126979-91:
(8*1)+(7*2)+(6*6)+(5*9)+(4*7)+(3*9)+(2*9)+(1*1)=177
177 % 10 = 7
So 126979-91-7 is a valid CAS Registry Number.