amino acids have been discovered in a variety of ways, though primarily by way of chemists and biochemists of high intelligence who possessed the greatest skills and patience and who were innovative and creative in their work.
37、*Hemimellitic1,2,32.80*4.20*5.87*Trimellitic1,2,42.52*3.84*5.20*9Trimesic1,3,53.12*Mellophanic1,2,3,42.06*Prehnitic1,2,3,52.38*Pyromellitic1,2,4,51.92*Benzenepentacarboxylic1,2,3,4,51.80*Mellitic1.2,3,4,5,61.40*ionic strength 0.03*thermodynamicCarboxylic AcidsRef. 77Aminomalonic acid...
pKaDataCompiledbyR.Williamspage-1pKaValuesINDEXInorganic2Phenazine24Phosphates3Pyridine25Carboxylicacids4,8Pyrazine26Aliphatic4,8Aromatic7,8Quinoline27Phenols9Quinazoline27Alcoholsandoxygenacids10,11Quinoxaline27AminoAcids12SpecialNitrogenCompounds28Peptides13Hydroxylamines28NitrogenCompounds14Hydrazines28Aliphaticamines15...
Titration of Amino Acids The pKavalues of thecarboxyl groupand the ammonium group of an amino acid, as well as the pHi, can be determined by titrating the conjugate acid withbase.Figure 14.2shows a typical titration curve for glycine. As base is added, some of the conjugate acid is convert...
Williams pKa Values INDEX Inorganic Phosphates Carboxylic acids Aliphatic Aromatic Phenols Alcohols and oxygen acids Amino Acids Peptides Nitrogen Compounds Aliphatic amines Cyanoamines Anilines Nucleosides Special Table Heterocycles Acridine Benzoquinoline Cinnoline Hydantoin Imidazole 2 3 4, 8 4, 8 7, 8...
p Ka Dat a Com p iled b y R. William s p age-1 pKa Values INDEX Inorganic 2 Phenazine 24 Phosphates 3 Pyridine 25 Carboxylic acids 4, 8 Pyrazine 26 Aliphatic 4, 8 Aromatic 7, 8 Quinoline 27 Phenols 9 Quinazoline 27 Alcohols and oxygen acids 10, 11 Quinoxaline 27 Amino Acids 12 Sp...
table. We’ll use as our first models the simple organic compounds ethane, methylamine, and ethanol, but the concepts apply equally to more complex biomolecules with the same functionalities, for example the side chains of the amino acids alanine (alkane), lysine (amine), and serine (alcohol)...
Amino Acids12Special Nitrogen Compounds28 Peptides13Hydroxylamines28 Nitrogen Compounds14Hydrazines28 Aliphatic amines15, 17, 19Semicarbazones28 Cyanoamines16Amidoximes28 Anilines17, 18, 20Thiols29 Nucleosides21Carbon Acids30,31 Special Table Heterocycles22Indicators31 Acridine23References32-34 Benzo...
Answer to: Explain each statement. a) The pKa of p-nitrophenol is lower than the pKa of phenol (7.2 vs. 10). b) The pKa of p-nitrophenol is lower...
pKaDataCompiledbyR.Williamspage-1pKaValuesINDEXInorganic2Phenazine24Phosphates3Pyridine25Carboxylicacids4,8Pyrazine26Aliphatic4,8Aromatic7,8Quinoline27Phenols9Quinazoline27Alcoholsandoxygenacids10,11Quinoxaline27AminoAcids12SpecialNitrogenCompounds28Peptides13Hydroxylamines28NitrogenCompounds14Hydrazines28Aliphaticamines15...