Salicylic Acid Impurity 7 CAS CATO-C4X-19027
| CAS No. | CATO-C4X-19027 |
| Molecular Formula | C11H13BrO3 |
| Molecular Weight | 273.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Salicylic Acid Impurity 7.
CATO supplies Salicylic Acid Impurity 7 (CAS CATO-C4X-19027), a pharmacopoeial impurity reference standard (molecular formula C11H13BrO3, MW 273.12 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, Salicylic Acid Impurity 7 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 273.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
CATO manufactures Salicylic Acid Impurity 7 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H13BrO3 |
| Molecular Weight | 273.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
Related Salicylic Standards
- Salicylic Acid Impurity 18 (CAS CATO-C4X-190218)
- Salicylic Acid Impurity 24 (CAS 83957-17-9)
- Salicylic Acid Impurity 4 (CAS CATO-C4X-19024)
- Salicylic Acid Impurity 6 (CAS 2731926-23-9)
- Salicylic acid Impurity 13 (CAS CATO-C4X-190213)
- Salicylic Acid Impurity 23 (CAS CATO-C4X-190223)
- Salicylic Acid Impurity 34 (CAS CATO-C4X-190234)
- Salicylic Acid Impurity 20 (CAS CATO-C4X-190220)
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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