223902-81-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 223902-81-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,9,0 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 223902-81:
(8*2)+(7*2)+(6*3)+(5*9)+(4*0)+(3*2)+(2*8)+(1*1)=116
116 % 10 = 6
So 223902-81-6 is a valid CAS Registry Number.