The ‘Substance identity’ section is calculated from substance identification information from all ECHA databases. The substance identifiers displayed in the InfoCard are the best available.
A2B Chem-BH71074; 2-(azetidin-3-yl)-2-methylpropanoic acid; trifluoroacetic acid 95%; CAS Number: 2225878-90-8; Formula: C9H14F3NO4; find pricing, technical data, related products, literature at A2B Chem.
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Answer: You need to specify a concentration of TFA. I will use 0.1M The pKa of TFA is 0.25 ( other values up to 0.5 are quoted, depending on the source) Ka = 10^-0.25 = 0.562 Calculate [H+] using Ka equation - unfortunately you have to use the full quadratic route because Ka is so high Let [....
Fluoroacetic acid is a organofluorine compound with formula CH 2 FCO 2 H. ... difluoroacetic acid and trifluoroacetic acid are far less toxic. Its pKa is 2.66, in contrast to 1.24 and 0.23 for the respective di- and trifluorinated acids. Uses.
A polypeptide thin film obtained by spontaneous polymerization of a film comprising an amphiphilic amino acid derivative monomer represent by formula (I): ##STR15## wherein R represents an organic group; XR 1 is an elimination group whose conjugated acid has a pka of not higher than 14; X represents --O--, --S--, or --N(R 2)--; R 1 represents.