1005640-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1005640-81-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,0,5,6,4 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1005640-81:
(9*1)+(8*0)+(7*0)+(6*5)+(5*6)+(4*4)+(3*0)+(2*8)+(1*1)=102
102 % 10 = 2
So 1005640-81-2 is a valid CAS Registry Number.