2638-62-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2638-62-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,3 and 8 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 2638-62:
(6*2)+(5*6)+(4*3)+(3*8)+(2*6)+(1*2)=92
92 % 10 = 2
So 2638-62-2 is a valid CAS Registry Number.