4-n-Dodecylbenzoic acid CAS 21021-55-6
| CAS No. | 21021-55-6 |
| Molecular Formula | C19H30O2 |
| Molecular Weight | 290.44 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-n-Dodecylbenzoic acid.
4-n-Dodecylbenzoic acid (CAS 21021-55-6), molecular formula C19H30O2 and molecular weight 290.44 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-n-Dodecylbenzoic acid (C19H30O2) 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-n-Dodecylbenzoic acid 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 | C19H30O2 |
| Molecular Weight | 290.44 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
Recommended Standards
- 3-(5,5,6-Trimethylbicyclo[2.2.1]heptan-2-yl)cyclohexyl acrylate (CAS 903876-45-9)
- 4-N-Dodecyloxybenzaldehyde (CAS 24083-19-0)
- 3-(4-Chlorobenzyl)oxazolidin-2-one (CAS 6317-28-8)
- 5a-ANDROSTAN-16a-OL-17-ONE (CAS 25846-17-7)
- 4-Amino-5-cyano-2-methyl-6-(methylthio)nicotinamide (CAS 1604041-57-7)
- Methyl 4-((trimethylsilyl)carbonyl)benzoate (CAS 75748-12-8)
- 2-Chloro-N-(2-chloro-6-methylphenyl)-N-(4-methoxybenzyl)thiazole-5-carboxamide (CAS 834888-63-0)
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- 1-((1-Methylcyclobutyl)methyl)-1H-pyrazol-4-amine (CAS 1862905-55-2)
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- 2-(1-Oxo-1,2-dihydrophthalazin-2-yl)ethanethioamide (CAS 1016860-91-5)
- 4-[3-(Trifluoromethyl)phenyl]benzoic Acid (CAS 195457-70-6)
- [Ser39-OH] Tirzepatide (CAS CATO-C4X-324041)
Why CATO?
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