Cloxacillin Impurity 17 CAS 91059-01-7
| CAS No. | 91059-01-7 |
| Molecular Formula | C11H7Cl2NO2 |
| Molecular Weight | 256.08 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 256.08 g/mol gives Cloxacillin Impurity 17 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Cloxacillin Impurity 17 (CAS 91059-01-7), a pharmacopoeial impurity reference standard (molecular formula C11H7Cl2NO2, MW 256.08 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Cloxacillin Impurity 17 (C11H7Cl2NO2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H7Cl2NO2 |
| Molecular Weight | 256.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >75% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Cloxacillin Standards
- Cloxacillin Impurity 15 (CAS 1598387-74-6)
- Cloxacillin Impurity 18 (CAS 25629-50-9)
- Cloxacillin Impurity N1 (CAS 4357-94-2)
- Cloxacillin Sodium Impurity 6 (CAS 83817-50-9)
- Cloxacillin Impurity 26 (CAS CATO-C4X-159726)
- Cloxacillin Impurity N2 (CAS 69399-79-7)
- Cloxacillin EP Impurity D (CAS 23598-72-3)
- Cloxacillin Impurity 23 (CAS CATO-C4X-159723)
Recommended Standards
- 3-Iodo-4-methoxy-pyridin-2-ylamine 4379AF 956485-64-6 C6H7IN2O (CAS 956485-64-6)
- Brivaracetam Impurity 149 (CAS CATO-C4X-2007149)
- (2-Amino-5-iodo-pyridin-3-yl)-methanol (2-amino-5-iodo-3-pyridinyl)methanol (2-amino-5-iodopyridin-3-yl)methanol 2 - Amino - 5 - iodopyridine - 3 - methanol 3-pyridinemethanol, 2-amino-5-iodo- 618107-90-7 (CAS 618107-90-7)
- Brivaracetam Impurity 33 (CAS CATO-C4X-200733)
- Amorolfine Impurity 3 HCl (CAS CATO-C4X-15423)
- Pentoxyverine Impurity 23 (CAS CATO-C4X-227023)
- Metoprolol EP Impurity N (CAS 6452-57-9)
- Potassium 1-Naphthaleneacetate (CAS 15165-79-4)
- 2-(Indolin-1-yl)-2-oxoacetic acid (CAS 1018243-08-7)
- (4-Chloro-2,5-difluorophenyl)methanamine (CAS 1545850-26-7)
- 2,3-Dimethyl-N-(pyrrolidin-2-ylmethyl)aniline dioxalate (CAS 1177271-44-1)
- 7-Methoxy-N-(2-((4-methyl-4H-1,2,4-triazol-3-yl)thio)ethyl)benzofuran-2-carboxamide (CAS 1206988-45-5)
- 2-((1-(Pyrazin-2-yl)ethyl)amino)ethanol (CAS 1343718-64-8)
- Fibrinogen Related Peptide (CAS 80755-86-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com