309929-09-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309929-09-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,2 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 309929-09:
(8*3)+(7*0)+(6*9)+(5*9)+(4*2)+(3*9)+(2*0)+(1*9)=167
167 % 10 = 7
So 309929-09-7 is a valid CAS Registry Number.