DL-threo-4-Fluoroisoglutamine CAS 261623-81-8
| CAS No. | 261623-81-8 |
| Molecular Formula | C5H9FN2O3 |
| Molecular Weight | 164.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 164.13 g/mol gives DL-threo-4-Fluoroisoglutamine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies DL-threo-4-Fluoroisoglutamine (CAS 261623-81-8), a certified reference material (molecular formula C5H9FN2O3, MW 164.13 g/mol) for analytical method development and quality control.
DL-threo-4-Fluoroisoglutamine (C5H9FN2O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C5H9FN2O3 |
| Molecular Weight | 164.13 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related DL Standards
- DL-threo-4-Fluoroglutamine (CAS 238418-69-4)
- (±)-threo-3-Methylglutamic acid (CAS 63088-04-0)
- D-threo- β-Phenylserine (CAS 109120-55-0)
- L-threo-Phenylserine (CAS 6254-48-4)
- L-(+)-Threo-2-(N,N-dimethylamino)-1-(4-aminophenyl)-1,3-propanediol (CAS 129170-43-0)
- D-(-)-THREO-2-AMINO-1-(4-NITROPHENYL)-1,3-PROPANEDIOL98% (CAS 3689-55-2)
- D-(-)-threo-2-Amino-1-(4-nitrophenyl)-1,3-propanediol (CAS 716-61-0)
- threo-Guaiacylglycerol (CAS 27391-16-8)
Recommended Standards
- L-erythro-4-Fluoroisoglutamine (CAS 374560-28-8)
- DL-erythro-4-Fluoroisoglutamine (CAS 883497-53-8)
- Sofosbuvir Impurity 68 (CAS 879551-04-9)
- DL-erythro-4-Fluoroglutamine (CAS 238418-67-2)
- 2-(5-chloro-2-ethoxy-4-formylphenoxy)acetamide (CAS 832133-68-3)
- 4-Butyl-N-(4-(tert-butyl)phenyl)aniline (CAS 398483-80-2)
- 3-Iodo-1H-indazole-6-carboxamide (CAS 906000-45-1)
- 2-(1h-1,3-Benzodiazol-2-yl)-n-(3-methoxypropyl)acetamide (CAS 749902-90-7)
- 5-Amino-4-cyano-1-(3-chlorophenyl)-3-methylpyrazole (CAS 107842-57-9)
- 1,1-Diphenyl-2-(pyren-1-ylmethylene)hydrazine (CAS 95993-52-5)
- 5-Methyl-6-oxabicyclo[3.1.0]hexan-2-one (CAS 17024-44-1)
- 2-Cyclohexylidenepropanenitrile (CAS 53153-76-7)
- 5-hydroxynaphthalen-1-yl acetate 94807-85-9 (CAS 94807-85-9)
- Tirzepatide Impurity 10 (CAS CATO-C4X-324010)
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