Bis(4-hydroxyphenyl)acetic Acid CAS 40232-93-7
| CAS No. | 40232-93-7 |
| Molecular Formula | C25H29ClN5O2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Bis(4-hydroxyphenyl)acetic Acid is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Bis(4-hydroxyphenyl)acetic Acid (CAS 40232-93-7) is a high-purity analytical reference standard with the molecular formula C25H29ClN5O2Cl and a molecular weight of 502.44 g/mol.
Bis(4-hydroxyphenyl)acetic Acid (C25H29ClN5O2Cl) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C25H29ClN5O2 Cl |
| Molecular Weight | 502.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 5 |
Related Bis Standards
- 6-(2-Hydroxyphenyl)hexanoic acid (CAS 100257-13-4)
- 3-(2-Hydroxyphenyl)-5-(2-methoxyethyl)-1-methyltetrahydropyrrolo[3,4-c]pyrazole-4,6(1H,5H)-dione (CAS 1005099-98-8)
- 5-(2-Hydroxyphenyl)-3a-methyl-octahydropyrrolo[2,3-b]pyrrol-2-one (CAS 1005100-31-1)
- 4-hydroxyphenyl diiSopropyl phosphate (CAS 100524-86-5)
- (E)-7-(2-Hydroxyphenyl)-1-phenylhept-4-en-3-one (CAS 100667-52-5)
- 1-(4-Hydroxyphenyl)propane-1,2-dione (CAS 10087-36-2)
- 3-(4-Hydroxyphenyl)-2-[4-(trifluoromethoxy)benzoylamino]propanoic acid (CAS 1008918-81-7)
- Ethyl 2-(4-hydroxyphenyl)-2-(N-methylacetamido)acetate (CAS 1008946-23-3)
Recommended Standards
- 1-Methyl-4-phenyl-1h-pyrazol-5-amine (CAS 30823-52-0)
- 4-((4,6-Bis(octylthio)-1,3,5-triazin-2-yl)amino)-2,6-di-tert-butylphenol (CAS 991-84-4)
- [4-(methanesulfonamidomethyl)phenyl]boronic acid (CAS 850568-38-6)
- Methyl 2-(methylamino)propanoate (CAS 52060-77-2)
- 6-(Ethoxycarbonyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 312708-27-3)
- 5-Iodo-1-(1-methylethyl)-1H-pyrazole (CAS 1345471-54-6)
- sec-Butyl 6-methyl-4-(3-nitrophenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 5601-79-6)
- 1,3-Di([2,2’-bithiophen]-5-yl)-1,3-propanedione (CAS 832732-77-1)
- 2-((1H-1,2,4-triazol-1-yl)methyl)-3-chloro-5-(trifluoromethyl)pyridine (CAS 339099-82-0)
- Semaglutide Impurity 152 xTFA (CAS CATO-C4X-2226152)
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