1636-24-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1636-24-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,3 and 6 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1636-24:
(6*1)+(5*6)+(4*3)+(3*6)+(2*2)+(1*4)=74
74 % 10 = 4
So 1636-24-4 is a valid CAS Registry Number.