331729-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331729-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,7,2 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 331729-56:
(8*3)+(7*3)+(6*1)+(5*7)+(4*2)+(3*9)+(2*5)+(1*6)=137
137 % 10 = 7
So 331729-56-7 is a valid CAS Registry Number.