Linezolid Impurity 77 CAS 3920-11-4
| CAS No. | 3920-11-4 |
| Molecular Formula | C5H10ClNO2 |
| Molecular Weight | 151.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 151.59 g/mol gives Linezolid Impurity 77 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Linezolid Impurity 77 (CAS 3920-11-4, C5H10ClNO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Linezolid Impurity 77 (C5H10ClNO2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 151.59 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C5H10ClNO2 |
| Molecular Weight | 151.59 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Linezolid Standards
- Linezolid Impurity 40 (CAS 224323-47-1)
- Linezolid Impurity 39 (CAS 39608-52-1)
- Linezolid Impurity 13 (CAS 369-34-6)
- Linezolid Impurity 65 (CAS CATO-C4X-107365)
- Linezolid Impurity 14 (CAS 1445-69-8)
- Linezolid Impurity 81 (CAS 38711-20-5)
- Linezolid Impurity 96 (CAS 152139-76-9)
- Linezolid Impurity 97 (CAS 384344-17-6)
Recommended Standards
- Ethyl (S)-2-amino-3-chloropropanoate (CAS 935394-64-2)
- Ethyl (chloromethyl)(methyl)carbamate (CAS 6807-45-0)
- Loratadine Impurity 69 (CAS 1529-41-5)
- Ethyl (2-chloroethyl)carbamate (CAS 6329-26-6)
- Cefditoren Impurity 12 (CAS 2762536-15-0)
- Brivaracetam Impurity 91 (CAS CATO-C4X-200791)
- Bezafibrate Impurity 6 (CAS 55458-78-1)
- 4-(Octyloxy)benzene-1-carboximidamide hydrochloride (CAS 29277-10-9)
- 3-(1-Benzyl-1,2,3,6-tetrahydropyridin-4-yl)-6-nitro-1H-indole (CAS 1637781-31-7)
- 2-Methylthieno[2,3-b]thiophene (CAS 26238-22-2)
- 4-(3-Fluorophenyl)-2-methylpyrimidine (CAS 85979-50-6)
- (2E)-3-{4-[(3-chlorophenyl)methoxy]phenyl}-N-[(4-methylphenyl)methyl]prop-2-enamide (CAS 477871-11-7)
- Methyl N-(4-chlorophenyl)-N-tosylglycinate (CAS 333447-01-1)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
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