23638-55-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23638-55-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,6,3 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 23638-55:
(7*2)+(6*3)+(5*6)+(4*3)+(3*8)+(2*5)+(1*5)=113
113 % 10 = 3
So 23638-55-3 is a valid CAS Registry Number.