145572-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 145572-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,5,5,7 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 145572-20:
(8*1)+(7*4)+(6*5)+(5*5)+(4*7)+(3*2)+(2*2)+(1*0)=129
129 % 10 = 9
So 145572-20-9 is a valid CAS Registry Number.
145572-20-9Relevant academic research and scientific papers
Synthesis and reactions of 4-sulpho-2,3,5,6-tetrafluorobenzoic acid
Fielding, H. C.,Shirley, I. M.
, p. 15 - 31 (2007/10/02)
4-Sulpho-2,3,5,6-tetrafluorobenzoic acid (I) has been synthesised from pentafluorobenzoic acid via the oxidation of 4-mercapto-tetrafluorobenzoic acid.Reaction of I with DMF/SOCl2 gave 1,4-ClC6F4COCl (IIA) which was converted to 1,4-ClC6F4COF (IIB) by flu
