Linezolid impurity 28 CAS 79669-87-7
| CAS No. | 79669-87-7 |
| Molecular Formula | C16H12O4 |
| Molecular Weight | 268.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 268.26 g/mol gives Linezolid impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Linezolid impurity 28 (CAS 79669-87-7) is a high-purity analytical reference standard with the molecular formula C16H12O4 and a molecular weight of 268.26 g/mol.
Linezolid impurity 28 (C16H12O4) contains a flavonoid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Linezolid impurity 28 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 | C16H12O4 |
| Molecular Weight | 268.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
Related Linezolid Standards
- Linezolid Impurity 6 (CAS 565176-83-2)
- Linezolid Impurity 48 (CAS 1532560-87-4)
- Linezolid Impurity 60 (CAS 333753-72-3)
- Linezolid Impurity 34 (CAS CATO-C4X-107334)
- Linezolid Impurity 18 (CAS 212325-40-1)
- Linezolid Impurity 19 (CAS CATO-C4X-153519)
- Linezolid Impurity 92 (CAS 872991-73-6)
- Linezolid Impurity 57 (CAS 477846-96-1)
Recommended Standards
- Ethyl 6-methyl-2-thioxo-4-(trifluoromethyl)-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 2764876-49-3)
- METHOXYFLAVONOL, 5- (CAS 6665-81-2)
- Ethyl 2-(ethylimino)-4-(trifluoromethyl)-2,3-dihydrothiazole-5-carboxylate (CAS 937597-94-9)
- Methyl 3-oxo-3-(2,3,4-trimethoxyphenyl)propanoate (CAS 886495-84-7)
- 2-Nitro-2,3-dihydro-1h-indene-1,3-dione dihydrate (CAS 64887-75-8)
- 2-Chloro-5-(trifluoromethyl)benzene-1,3-diamine (CAS 34207-44-8)
- 2-Cyclopentyl-2-phenylethan-1-amine (CAS 175343-28-9)
- (4E,8E,12E,16E)-4,8,13,17,21-Pentamethyldocosa-4,8,12,16,20-pentaenoic acid (CAS 56882-00-9)
- Dexmedetomidine Impurity 58 (CAS 104175-24-8)
- Solifenacin EP impurity F HCl (CAS 180468-40-0)
- Ethyl 6-methyl-4-(4-nitrophenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 161374-08-9)
- N1-(Benzo[d][1,3]dioxol-5-ylmethyl)-N2-(3-chloro-4-methylphenyl)oxalamide (CAS 428823-80-7)
- 6-(4-fluorophenyl)thieno[3,2-d]pyrimidine-4-thiol (CAS 757221-68-4)
- Tirzepatide Impurity 13 (CAS CATO-C4X-324013)
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