1231937-75-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1231937-75-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,1,9,3 and 7 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1231937-75:
(9*1)+(8*2)+(7*3)+(6*1)+(5*9)+(4*3)+(3*7)+(2*7)+(1*5)=149
149 % 10 = 9
So 1231937-75-9 is a valid CAS Registry Number.