203742-97-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203742-97-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,7,4 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 203742-97:
(8*2)+(7*0)+(6*3)+(5*7)+(4*4)+(3*2)+(2*9)+(1*7)=116
116 % 10 = 6
So 203742-97-6 is a valid CAS Registry Number.