207308-34-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 207308-34-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,7,3,0 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 207308-34:
(8*2)+(7*0)+(6*7)+(5*3)+(4*0)+(3*8)+(2*3)+(1*4)=107
107 % 10 = 7
So 207308-34-7 is a valid CAS Registry Number.