159417-71-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159417-71-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,4,1 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 159417-71:
(8*1)+(7*5)+(6*9)+(5*4)+(4*1)+(3*7)+(2*7)+(1*1)=157
157 % 10 = 7
So 159417-71-7 is a valid CAS Registry Number.