3-Methoxy-4-methylbenzoic Acid CAS 55289-06-0
| CAS No. | 55289-06-0 |
| Molecular Formula | C9H10O3 |
| Molecular Weight | 166.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Methoxy-4-methylbenzoic Acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Methoxy-4-methylbenzoic Acid (CAS 55289-06-0), molecular formula C9H10O3 and molecular weight 166.17 g/mol, is a CATO reference standard with documented purity and traceability.
3-Methoxy-4-methylbenzoic Acid (C9H10O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H10O3 |
| Molecular Weight | 166.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related Methoxy Standards
- 6-Methoxy-2,3-dihydrobenzofuran-3-ol (CAS 1340253-23-7)
- 2-Methoxy-3-methylbenzoic Acid (CAS 26507-91-5)
- 2-Methoxy-5-methylbenzoic acid (CAS 25045-36-7)
- 2-Methoxy-6-methylbenzoic Acid (CAS 6161-65-5)
- 3-Methoxy-4-methylbenzoic Acid (CAS 7151-68-0)
- 3-Methoxy-5-methylbenzoic Acid (CAS 62089-34-3)
- 4-Methoxy-2-methylbenzoic Acid (CAS 6245-57-4)
- 4-Methoxy-3-methylbenzoic Acid (CAS 6880-04-2)
Recommended Standards
- Methyl 4-Hydroxyphenylacetate (CAS 14199-15-6)
- Methyl o-Anisate (CAS 606-45-1)
- Apocynin (CAS 498-02-2)
- 3,5-Dimethoxybenzaldehyde (CAS 7311-34-4)
- 3-(4-Bromo-3-methylphenoxy)piperidinehydrochloride (CAS 1219967-99-3)
- 7-Chloroisoquinolin-1(2H)-one (CAS 24188-74-7)
- 2,6-Diphenyl-3-(3-(trifluoromethyl)phenyl)pyrimidin-4(3H)-one (CAS 89069-88-5)
- N'-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-1,1,1-trifluoro-N'-methylmethanesulfonohydrazide (CAS 338770-29-9)
- 1-Bromo-6,7-dimethoxyisoquinoline (CAS 949139-74-6)
- 5-(((6-(4-Isopropylphenyl)pyridazin-3-yl)thio)methyl)-3-(p-tolyl)-1,2,4-oxadiazole (CAS 1114915-41-1)
- Methyl 1-(3-methylphenyl)-2-pyrrolidinone-4-carboxylate (CAS 1071346-78-5)
- (S)-2-(tert-Butyl)-3-methylimidazolidin-4-one (CAS 101143-57-1)
- 2-Methyl-5-(piperidin-1-yl)oxazole-4-carbonitrile (CAS 49837-50-5)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
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