1604838-34-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1604838-34-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,0,4,8,3 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1604838-34:
(9*1)+(8*6)+(7*0)+(6*4)+(5*8)+(4*3)+(3*8)+(2*3)+(1*4)=167
167 % 10 = 7
So 1604838-34-7 is a valid CAS Registry Number.