4-(3-Hydroxyphenoxy)benzoic acid CAS 56183-35-8
| CAS No. | 56183-35-8 |
| Molecular Formula | C13H10O4 |
| Molecular Weight | 230.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| 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 4-(3-Hydroxyphenoxy)benzoic acid.
4-(3-Hydroxyphenoxy)benzoic acid (CAS 56183-35-8), molecular formula C13H10O4 and molecular weight 230.22 g/mol, is a CATO reference standard with documented purity and traceability.
4-(3-Hydroxyphenoxy)benzoic acid (C13H10O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, 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.
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 | C13H10O4 |
| Molecular Weight | 230.22 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Hydroxyphenoxy Standards
- 4-(3-Hydroxyphenoxy)pyridine-2-carboxamide (CAS 1183665-90-8)
- 4-(4-Hydroxyphenoxy)-2-Pyridinecarboxamide (CAS 952490-71-0)
- 4-(4-Hydroxyphenoxy)benzoic acid (CAS 500-76-5)
- 4-(4-hydroxyphenoxy)-3-methylbenzonitrile (CAS 1184486-24-5)
- Ethyl 2-(3-hydroxyphenoxy)-2-methylpropanoate (CAS 328919-24-0)
- Ethyl 2-(4-hydroxyphenoxy)-2-methylpropanoate (CAS 42806-90-6)
- 2-(2-Hydroxyphenoxy)-N-isobutylacetamide (CAS 1094241-99-2)
- 2-(4-Hydroxyphenoxy)-N-isopropylpropanamide (CAS 1094370-49-6)
Recommended Standards
- 4-(2-Nitrophenoxy)aniline (CAS 26196-58-7)
- 4-(2,4-Dioxo-3-azabicyclo[3.1.0]Hexan-3-yl)benzamide (CAS 866151-33-9)
- 4-(1-Methyl-6-oxo-1,6-dihydropyridazin-3-yl)benzoic acid (CAS 860013-31-6)
- 4-(4-Nitrophenoxy)aniline (CAS 6149-33-3)
- 5-Methyl-2-phenyl-[1,2,4]triazolo[1,5-a]pyridine (CAS 4931-29-7)
- PBI 51 (CAS 130694-74-5)
- 2-((5-Methyl-4-phenylthiazol-2-yl)methyl)thiazol-4-ol (CAS 861206-90-8)
- 1-(Tetrahydrofuran-2-carbonyl)azetidine-3-carboxylic acid (CAS 1339405-12-7)
- 2-(4-Methyl-5-phenyl-4h-1,2,4-triazol-3-yl)acetonitrile (CAS 923254-73-3)
- 2-(2,5-Dichlorophenoxy)acetonitrile (CAS 343867-70-9)
- methyl 2-oxo-3H-1,3-benzoxazole-4-carboxylate (CAS 100246-04-6)
- (p-Tolylmethylene)dibenzene (CAS 603-37-2)
- 2-(2-(Hydroxymethyl)-5-nitrophenyl)acetic acid (CAS 1027507-63-6)
- D-[Ser]8-Semaglutide (CAS CATO-CPTD788632)
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