2643-41-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2643-41-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,6,4 and 3 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2643-41:
(6*2)+(5*6)+(4*4)+(3*3)+(2*4)+(1*1)=76
76 % 10 = 6
So 2643-41-6 is a valid CAS Registry Number.