4-Carboxy[2.2]paracyclophane CAS 18931-39-0
| CAS No. | 18931-39-0 |
| Molecular Formula | C17H16O2 |
| Molecular Weight | 252.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Carboxy[2.2]paracyclophane is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Carboxy[2.2]paracyclophane (CAS 18931-39-0), a certified reference material (molecular formula C17H16O2, MW 252.31 g/mol) for analytical method development and quality control.
4-Carboxy[2.2]paracyclophane (C17H16O2) contains a steroid core, a hydroxyl group, an ether linkage. 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.
CATO manufactures 4-Carboxy[2.2]paracyclophane 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 | C17H16O2 |
| Molecular Weight | 252.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Carboxy Standards
- (R)-(-)-4-Carboxy[2.2]paracyclophane (CAS 108340-94-9)
- (S)-(+)-4-Carboxy[2.2]paracyclophane (CAS 19776-83-1)
- (2-carboxy-3-hydroxy-3-methylbutan-2-yl)oxy-(1H-indol-2-yl)boron 476004-81-6 A827280 [2,3-dimethyl-1,3-bis(oxidanyl)-1-oxidanylidene-butan-2-yl]oxy-(1H-indol-2-yl)boron (CAS 476004-81-6)
- 4-(4-Carboxy-3-fluorophenyl)-2-fluorophenol (CAS 1261981-84-3)
- 3-Carboxy-4-(trifluoromethoxy)phenylboronic acid (CAS 2096329-67-6)
- 4′-Carboxy[1,1′-biphenyl]-3-acetic acid (CAS 1375068-94-2)
- 3′-Carboxy[1,1′-biphenyl]-4-acetic acid (CAS 868394-58-5)
- 5-(4-Carboxy-phenyl)-thiophene-2-carboxylic acid (CAS 597565-50-9)
Recommended Standards
- (3-(Benzyloxy)phenyl)(cyclopropyl)methanone (CAS 1869772-29-1)
- Methyl 2,2-diphenylcyclopropane-1-carboxylate (CAS 19179-60-3)
- Ethyl 3-((1-phenoxypropan-2-yl)oxy)propanoate (CAS 1841081-43-3)
- Cis-2-benzyl-5-phenyldihydrofuran-3(2H)-one (CAS 192212-46-7)
- Methyl 3-(4-piperidinyloxy)propanoatehydrochloride (CAS 190515-56-1)
- N-(Pyridin-2-ylcarbamoyl)benzamide (CAS 39764-04-0)
- (Z)-4-(5-(4-chlorobenzylidene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid (CAS 17385-93-2)
- clodantoin (CAS 5588-20-5)
- (5-(Pyridin-4-yl)thiophen-2-yl)boronic acid (CAS 2225176-80-5)
- Gefitinib Impurity 27 (CAS 861453-12-5)
- 3’,4’-Dibromoacetophenone (CAS 3114-30-5)
- 2-(3,4-dimethylphenyl)-1,3-thiazole-5-carboxylic acid (CAS 886370-23-6)
- 1-Methyl-1,2-dihydropyrimidine-2-thione (CAS 73547-86-1)
- Semaglutide impurity 58 (CAS CATO-C4X-222658)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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