170158-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170158-61-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,1,5 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 170158-61:
(8*1)+(7*7)+(6*0)+(5*1)+(4*5)+(3*8)+(2*6)+(1*1)=119
119 % 10 = 9
So 170158-61-9 is a valid CAS Registry Number.