18636-59-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 18636-59-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,6,3 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 18636-59:
(7*1)+(6*8)+(5*6)+(4*3)+(3*6)+(2*5)+(1*9)=134
134 % 10 = 4
So 18636-59-4 is a valid CAS Registry Number.