13421-18-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13421-18-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,4,2 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 13421-18:
(7*1)+(6*3)+(5*4)+(4*2)+(3*1)+(2*1)+(1*8)=66
66 % 10 = 6
So 13421-18-6 is a valid CAS Registry Number.
InChI:InChI=1/C17H17ClN2O2S/c1-19(2)10-9-17(21)20-13-5-3-4-6-15(13)23(22)16-8-7-12(18)11-14(16)20/h3-8,11H,9-10H2,1-2H3