331661-48-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331661-48-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,6,6 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 331661-48:
(8*3)+(7*3)+(6*1)+(5*6)+(4*6)+(3*1)+(2*4)+(1*8)=124
124 % 10 = 4
So 331661-48-4 is a valid CAS Registry Number.