34903-58-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 34903-58-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,9,0 and 3 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 34903-58:
(7*3)+(6*4)+(5*9)+(4*0)+(3*3)+(2*5)+(1*8)=117
117 % 10 = 7
So 34903-58-7 is a valid CAS Registry Number.