1557159-16-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1557159-16-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,5,7,1,5 and 9 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1557159-16:
(9*1)+(8*5)+(7*5)+(6*7)+(5*1)+(4*5)+(3*9)+(2*1)+(1*6)=186
186 % 10 = 6
So 1557159-16-6 is a valid CAS Registry Number.