40641-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40641-91-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,6,4 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 40641-91:
(7*4)+(6*0)+(5*6)+(4*4)+(3*1)+(2*9)+(1*1)=96
96 % 10 = 6
So 40641-91-6 is a valid CAS Registry Number.