1639342-48-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1639342-48-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,9,3,4 and 2 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1639342-48:
(9*1)+(8*6)+(7*3)+(6*9)+(5*3)+(4*4)+(3*2)+(2*4)+(1*8)=185
185 % 10 = 5
So 1639342-48-5 is a valid CAS Registry Number.