72178-89-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72178-89-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,7 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 72178-89:
(7*7)+(6*2)+(5*1)+(4*7)+(3*8)+(2*8)+(1*9)=143
143 % 10 = 3
So 72178-89-3 is a valid CAS Registry Number.