| CAS Number | 56-41-7 |
|---|---|
| Molecular Formula | C3H7NO2 |
| Molecular Weight | 89.094 g/mol |
| InChI Key | QNAYBMKLOCPYGJ-REOHCLBHSA-N |
| LogP | -2.51 |
| Synonyms |
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Applications:
Amino Acids Analysis in Acid Gradient Condition
11 underivatized amino acids (aspartic acid, glutamic acid, alanine, valine, methionine, isoleucine, cysteine, phenylalanine, histidine, lysine, and arginine) are separated by a Primesep 100 HPLC column by reversed-phase and ion-exchange mechanisms with LC/MS compatible conditions without the use of ion-pair reagents. The HPLC separation uses a TFA (trifluoroacetic acid) gradient in a mobile phase of water acetonitrile (MeCN, ACN with evaporative light scattering detection (ELSD).
| Column | Primesep 100, 4.6x250 mm, 5 µm, 100A |
| Mobile Phase | MeCN/H2O - 30/70% |
| Buffer | TFA , gradient 0.05-0.3 % , 25 min |
| Flow Rate | 1.0 ml/min |
| Detection | ELSD |
| Class of Compounds | Drug, Acid, Hydrophilic, Ionizable, Vitamin, Supplements |
| Analyzing Compounds | Gaspartic acid, Glutamic acid, Alanine, Valine, Methionine, Isoleucine, Cysteine, Phenylalanine, Histidine, Lysine, Arginine |
Application Analytes:
Alanine
Amino Acids
Arginine
Aspartic Acid
Cysteine
Glutamic Acid
Histidine
Isoleucine
Lysine
Methionine
Phenylalanine
Valine
Bufferless Ion Separation (BLIS™) Chromatography of Amino Acids (2)
Adding on to the previous HPLC separation of amino acids using Bufferless Ion Separation (BLIS) Chromatography; here we have additional amino acids separated on Primesep 200 column using only water and acetonitrile (MeCN, ACN) in the mobile phase. Primesep 200 is a reverse-phase (RP) column with weak acidic ion-pairing groups embedded. With no buffer present in the mobile phase, detection can be achieved with UV, mass spectrometry (MS), evaporative light scattering detection (ELSD).
| Column | Primesep 200, 4.6x150 mm, 5 µm, 100A |
| Mobile Phase | MeCN/H2O - 40/60% |
| Buffer | No |
| Flow Rate | 1.0 ml/min |
| Detection | UV, 195 nm |
| Class of Compounds | Drug, Acid, Hydrophilic, Ionizable, Vitamin, Supplements, Amino acid |
| Analyzing Compounds | Aspartic acid, Alanine, Valine, Methionine, Leucine |
Application Analytes:
Alanine
Amino Acids
Aspartic Acid
Leucine
Methionine
Valine
HPLC Separation of Lysine and Arginine from Other Amino Acids
Application Notes: Amino acids are polar ionic compounds which are not retained on reversed-phase column without ion-pairing reagent. In our application, lysine and arginine can be separated from other amino acids. Amino acids with a pH between 3 and 5 and with one basic and one acidic group become very polar. Therefore these amino acids don’t have strong ion-exchange interaction with Primesep C stationary phase. Amino acids with two amino groups still carry positive net charge and can interact with stationary phase by cations-exchange mechanism. pH variation of the mobile phase can be an effective tool to adjust selectivity of separation for zwitter-ionic, basic and acidic compounds. This method can be used for separation of mono-charged compounds from compounds having an extra charge.
Application Columns: Primesep C
Application compounds: Aspartic acid, Glutamic acid, Aspargine, Glycine, Proline, Alanine, Phenylalanine, Tyrosine, Leucine, Lysine, Arginine
Detection technique: UV, LC/MS, ELSD/CAD
| Column | Primesep C, 4.6x150 mm, 5 µm, 100A |
| Mobile Phase | MeCN - 15% |
| Buffer | AmAc pH 5.0- 15 mM |
| Flow Rate | 1.0 ml/min |
| Detection | ELSD |
| Class of Compounds | Drug, Acid, Hydrophilic, Ionizable, Vitamin, Supplements |
| Analyzing Compounds | Aspartic acid, Glutamic acid, Aspargine, Glycine, Proline, Alanine, Phenylalanine, Tyrosine, Leucine, Lysine, Arginine |
Application Analytes:
Alanine
Arginine
Asparagine
Aspartic Acid
Glutamic Acid
Glycine
Leucine
Lysine
Phenylalanine
Proline
Tyrosine