4148-91-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4148-91-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,1,4 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4148-91:
(6*4)+(5*1)+(4*4)+(3*8)+(2*9)+(1*1)=88
88 % 10 = 8
So 4148-91-8 is a valid CAS Registry Number.