1638623-53-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1638623-53-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,6,2 and 3 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1638623-53:
(9*1)+(8*6)+(7*3)+(6*8)+(5*6)+(4*2)+(3*3)+(2*5)+(1*3)=186
186 % 10 = 6
So 1638623-53-6 is a valid CAS Registry Number.