1612159-51-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1612159-51-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,2,1,5 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1612159-51:
(9*1)+(8*6)+(7*1)+(6*2)+(5*1)+(4*5)+(3*9)+(2*5)+(1*1)=139
139 % 10 = 9
So 1612159-51-9 is a valid CAS Registry Number.