19831-37-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19831-37-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,3 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19831-37:
(7*1)+(6*9)+(5*8)+(4*3)+(3*1)+(2*3)+(1*7)=129
129 % 10 = 9
So 19831-37-9 is a valid CAS Registry Number.