115861-21-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 115861-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,5,8,6 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 115861-21:
(8*1)+(7*1)+(6*5)+(5*8)+(4*6)+(3*1)+(2*2)+(1*1)=117
117 % 10 = 7
So 115861-21-7 is a valid CAS Registry Number.