78215-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78215-74-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,2,1 and 5 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 78215-74:
(7*7)+(6*8)+(5*2)+(4*1)+(3*5)+(2*7)+(1*4)=144
144 % 10 = 4
So 78215-74-4 is a valid CAS Registry Number.