78148-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 78148-91-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,1,4 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 78148-91:
(7*7)+(6*8)+(5*1)+(4*4)+(3*8)+(2*9)+(1*1)=161
161 % 10 = 1
So 78148-91-1 is a valid CAS Registry Number.