82639-40-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 82639-40-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,6,3 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 82639-40:
(7*8)+(6*2)+(5*6)+(4*3)+(3*9)+(2*4)+(1*0)=145
145 % 10 = 5
So 82639-40-5 is a valid CAS Registry Number.