91643-98-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91643-98-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,4 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 91643-98:
(7*9)+(6*1)+(5*6)+(4*4)+(3*3)+(2*9)+(1*8)=150
150 % 10 = 0
So 91643-98-0 is a valid CAS Registry Number.