DL-threo-4-Fluoroglutamine CAS 238418-69-4
| CAS No. | 238418-69-4 |
| Molecular Formula | C5H9FN2O3 |
| Molecular Weight | 164.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
DL-threo-4-Fluoroglutamine (CAS 238418-69-4), molecular formula C5H9FN2O3 and molecular weight 164.13 g/mol, is a CATO reference standard with documented purity and traceability.
DL-threo-4-Fluoroglutamine (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.
As a certified reference material (CRM), DL-threo-4-Fluoroglutamine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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-Fluoroisoglutamine (CAS 261623-81-8)
- (±)-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
- DL-erythro-4-Fluoroisoglutamine (CAS 883497-53-8)
- DL-erythro-4-Fluoroglutamine (CAS 238418-67-2)
- L-erythro-4-Fluoroisoglutamine (CAS 374560-28-8)
- Dimethyl 2-fluorosuccinate (CAS 94799-36-7)
- 8-(Propan-2-yl)-8-azabicyclo[3.2.1]octane-3-carboxylic acid (CAS 1209917-19-0)
- 2-((4-Fluorobenzyl)amino)acetonitrile (CAS 63086-22-6)
- N-(piperidin-4-ylmethyl)-1H-benzo[d]imidazol-2-amine (CAS 302339-26-0)
- 2-[(4-aminophenyl)methoxy]ethan-1-ol (CAS 1019516-04-1)
- 4-(4-Bromo-1H-pyrazol-1-yl)-N,N-diethylbenzenesulfonamide (CAS 1199773-40-4)
- Blood Group B Type II Linear Trisaccharide (CAS 77356-46-8)
- (2S,4S)-1-(tert-Butoxycarbonyl)-4-[3-(tert-butyl)-phenoxy]-2-pyrrolidinecarboxylic acid (CAS 1217838-70-4)
- 3-(4-Bromophenyl)-1-(4-methylpiperazin-1-yl)propan-1-one (CAS 1007210-99-2)
- 2-((3-Cyano-6-methylpyridin-2-yl)thio)-N-(2-methyl-4-nitrophenyl)acetamide (CAS 332177-09-0)
- Neuropeptide FF (CAS 99566-27-5)
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