1211691-72-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1211691-72-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,1,6,9 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1211691-72:
(9*1)+(8*2)+(7*1)+(6*1)+(5*6)+(4*9)+(3*1)+(2*7)+(1*2)=123
123 % 10 = 3
So 1211691-72-3 is a valid CAS Registry Number.