331656-24-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331656-24-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,6,5 and 6 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 331656-24:
(8*3)+(7*3)+(6*1)+(5*6)+(4*5)+(3*6)+(2*2)+(1*4)=127
127 % 10 = 7
So 331656-24-7 is a valid CAS Registry Number.