72183-81-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72183-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,8 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 72183-81:
(7*7)+(6*2)+(5*1)+(4*8)+(3*3)+(2*8)+(1*1)=124
124 % 10 = 4
So 72183-81-4 is a valid CAS Registry Number.