102159-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 102159-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,2,1,5 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 102159-91:
(8*1)+(7*0)+(6*2)+(5*1)+(4*5)+(3*9)+(2*9)+(1*1)=91
91 % 10 = 1
So 102159-91-1 is a valid CAS Registry Number.