Pentamethylbenzoic acid CAS 2243-32-5
| CAS No. | 2243-32-5 |
| Molecular Formula | C12H16O2 |
| Molecular Weight | 192.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 192.25 g/mol gives Pentamethylbenzoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Pentamethylbenzoic acid (CAS 2243-32-5), a certified reference material (molecular formula C12H16O2, MW 192.25 g/mol) for analytical method development and quality control.
Based on its molecular formula C12H16O2, Pentamethylbenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 192.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Pentamethylbenzoic acid 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 | C12H16O2 |
| Molecular Weight | 192.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| 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.) | 1957 |
Recommended Standards
- Penbutolol Impurity 13 (CAS 32396-10-4)
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- Oxeladin EP Impurity B (CAS 5465-28-1)
- Phenyl(tetrahydro-2H-pyran-4-yl)methanol (CAS 216087-92-2)
- Methyl 2-chloro-5-(trifluoromethyl)isonicotinate (CAS 1246685-28-8)
- 2-Chloro-N-hydroxy-N'-phenylbenzimidamide (CAS 65251-91-4)
- 1,4,8-Trioxaspiro[4.5]decan-2-ylmethanamine (CAS 1018603-76-3)
- 2-Chloro-5-fluoro-4-(methylthio)-pyridine (CAS 1820741-49-8)
- Dimethyl 2-amino-5-chloroterephthalate (CAS 32888-87-2)
- 2-Chloro-5-(3-ethoxycarbonylbenzoyl)pyridine (CAS 890100-48-8)
- 3-(Difluoromethyl)-5-methyl-4-nitropicolinonitrile (CAS 1805183-31-6)
- N-benzyl-N-methylazepan-4-amine (CAS 1339192-22-1)
- 1,4-Dioxaspiro[4.5]decan-7-one (CAS 4969-01-1)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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