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Aminomethylphosphonic acid (AMPA) is a aminophosphonate with a weak phosphonic acid group. Application. AMPA apparently can be used as biocide and pesticide. [1]
ch 2 =chco 2 r + 3 h 3 po 3 → (ho) 2 p(o)ch 2 ch 2 co 2 r In the Hirao coupling dialkyl phosphites (which can also be viewed as di-esters of phosphonic acid: (O=PH(OR) 2 ) undergo a palladium-catalyzed coupling reaction with an aryl halide to form a phosphonate.
The systematic name of this enzyme class is (2-aminoethyl)phosphonate:pyruvate aminotransferase. Other names in common use include (2-aminoethyl)phosphonate transaminase , (2-aminoethyl)phosphonate aminotransferase , (2-aminoethyl)phosphonic acid aminotransferase , 2-aminoethylphosphonate-pyruvate aminotransferase , 2-aminoethylphosphonate ...
To perform such a calculation, one needs theoretical methods that can calculate the effect of the protein interior on a pK a value, and knowledge of the pKa values of amino acid side chains in their fully solvated states. [2] [3] [4] [5]
Acting as antagonists of amino acids, they inhibit enzymes involved in amino acid metabolism and thus affect the physiological activity of the cell. These effects may be exerted as antibacterial, plant growth regulatory or neuromodulatory. They can act as ligands, and heavy metal complexes with aminophosphonates have medical applications. [2]
The last one is pyrophosphate [P 2 O 7] 4−. The pyrophosphates are mostly water-soluble. Likewise, tripolyphosphoric acid H 5 P 3 O 10 yields at least five anions [H 5−k P 3 O 10] k−, where k ranges from 1 to 5, including tripolyphosphate [P 3 O 10] 5−. Tetrapolyphosphoric acid H 6 P 4 O 13 yields at least six anions, including ...
Buffering is weak outside the range pK a ± 1. At pH ≤ pK a − 2 the substance is said to be fully protonated and at pH ≥ pK a + 2 it is fully dissociated (deprotonated). If the pH is known, the ratio may be calculated. This ratio is independent of the analytical concentration of the acid. In water, measurable pK a values range from about ...
Methylphosphonic acid is an organophosphorus compound with the chemical formula CH 3 P(O)(OH) 2. The phosphorus center is tetrahedral and is bonded to a methyl group, two OH groups and an oxygen. Methylphosphonic acid is a white, non-volatile solid that is poorly soluble in organic solvent but soluble in water and common alcohols.