81923-16-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81923-16-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,9,2 and 3 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81923-16:
(7*8)+(6*1)+(5*9)+(4*2)+(3*3)+(2*1)+(1*6)=132
132 % 10 = 2
So 81923-16-2 is a valid CAS Registry Number.