DL-threo-Chloramphenicol-d5 CAS 1420043-66-8
| CAS No. | 1420043-66-8 |
| Molecular Formula | - |
| Molecular Weight | 328.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, DL-threo-Chloramphenicol-d5 (C11H7D5Cl2N2O5) contains deuterium isotope labeling, a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.5, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 328.16 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies DL-threo-Chloramphenicol-d5 (CAS 1420043-66-8), a certified reference material (molecular formula C11H7D5Cl2N2O5, MW 328.16 g/mol) for analytical method development and quality control.
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-Chloramphenicol-d5 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 | C11H7D5Cl2N2O5 |
| Molecular Weight | 328.16 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related DL Standards
- threo-m-Chloramphenicol (CAS 138125-72-1)
- rac threo-9,10-Dihydroxystearic Acid (CAS 2391-05-1)
- (+/-)-Threo-9,10-dihydroxy-12(Z)-octadecenoic acid (9R,10R,Z)-9,10-dihydroxyoctadec-12-enoic acid 263399-34-4 (CAS 263399-34-4)
- threo-12,13-Dihydroxy-9(Z)-octadecenoic acid (CAS 263399-35-5)
- DL-threo-Dihydrosphingosine (CAS 73938-69-9)
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- D-threo-1-(4-Sulfonylphenyl)-2-dichloroacetylamino-1,3-propanediol Sodium Salt (CAS 903508-30-5)
- threo-Guaiacylglycerol ß-coniferyl ether (CAS 869799-76-8)
Recommended Standards
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- Chloramphenicol-d5 (CAS CATO-CCAD303919)
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