1271191-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1271191-89-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,1,1,9 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1271191-89:
(9*1)+(8*2)+(7*7)+(6*1)+(5*1)+(4*9)+(3*1)+(2*8)+(1*9)=149
149 % 10 = 9
So 1271191-89-9 is a valid CAS Registry Number.