1231761-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1231761-23-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,1,7,6 and 1 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1231761-23:
(9*1)+(8*2)+(7*3)+(6*1)+(5*7)+(4*6)+(3*1)+(2*2)+(1*3)=121
121 % 10 = 1
So 1231761-23-1 is a valid CAS Registry Number.