666239-33-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 666239-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,2,3 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 666239-33:
(8*6)+(7*6)+(6*6)+(5*2)+(4*3)+(3*9)+(2*3)+(1*3)=184
184 % 10 = 4
So 666239-33-4 is a valid CAS Registry Number.