130661-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 130661-21-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,6,6 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 130661-21:
(8*1)+(7*3)+(6*0)+(5*6)+(4*6)+(3*1)+(2*2)+(1*1)=91
91 % 10 = 1
So 130661-21-1 is a valid CAS Registry Number.