Hydroquinone Impurity 3 CAS CATO-C4X-25983
| CAS No. | CATO-C4X-25983 |
| Molecular Formula | C27H34O |
| Molecular Weight | 374.56 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Hydroquinone Impurity 3 (CAS CATO-C4X-25983), a pharmacopoeial impurity reference standard (molecular formula C27H34O, MW 374.56 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Hydroquinone Impurity 3 (C27H34O) is characterized by a steroid core, a hydroxyl group, an ether linkage. 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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.
As a certified reference material (CRM), Hydroquinone Impurity 3 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 | C27H34O |
| Molecular Weight | 374.56 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Hydroquinone Standards
- Hydroquinone Impurity 5 (CAS CATO-C4X-25985)
- Hydroquinone Impurity 6 (CAS 1796929-11-7)
- Hydroquinone Impurity 2 (CAS 2419143-84-1)
- Hydroquinone Impurity 8 (CAS CATO-C4X-25988)
- Hydroquinone bis(2-hydroxyethyl) ether (CAS 104-38-1)
- Hydroquinone, isobutyl- (CAS 4197-78-8)
- 637-89-8 Hydroquinone, monothio- p-Mercaptophenol Phenol, p-mercapto- (8CI) Phenol, 4-mercapto- (9CI) Phenol, 4-mercapto- 4-06-00-05790 (Beilstein Handbook Reference) AI3-32249 BRN 2039306 EINECS 211-307-6 4-Hydroxybenzenethiol p-Hydroxythiophenol 4-Hydroxythiophenol 4-Mercaptophenol Monothiohydroquinone NSC 46192 Thiohydroquinone USAF B-57 (CAS 637-89-8)
- Hydroquinone-d6 (CAS 71589-26-9)
Recommended Standards
- Teprenone impurity 41 (CAS 1206897-24-6)
- Deoxycholic acid Impurity 1 (CAS CATO-C4X-33591)
- Teprenone impurity 38 (CAS CATO-C4X-208138)
- Deoxycholic acid Impurity 2 (CAS CATO-C4X-33592)
- Salbutamol Impurity 218 (CAS CATO-C4X-1176218)
- Nabumetone EP Impurity F (CAS 29619-45-2)
- Empagliflozin Impurity 69 (CAS CATO-C4X-106569)
- 2-Bromo-5-methoxypyridine 1-oxide (CAS 1305322-98-8)
- Methyl 5-ethyl-3-methyl-1H-pyrazole-4-carboxylate (CAS 89270-11-1)
- 2-(1,3-Dioxoisoindolin-2-yl)-3-(methylthio)propanoic acid (CAS 55582-20-2)
- 5-(Piperazin-1-yl)-1,2,4-thiadiazole (CAS 67869-93-6)
- (2-(7-Methoxy-2-oxo-2H-chromen-4-yl)acetyl)glycine (CAS 220184-28-1)
- 4-Chloro-6-methoxyquinoline-3-carboxamide (CAS 476193-93-8)
- Peptide Impurity 82 (CAS 10491-78-8)
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