3-Formyl-5-methylbenzoic acid CAS 4481-27-0
| CAS No. | 4481-27-0 |
| Molecular Formula | C9H8O3 |
| Molecular Weight | 164.16 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 3-Formyl-5-methylbenzoic acid.
3-Formyl-5-methylbenzoic acid (CAS 4481-27-0) is a high-purity analytical reference standard with the molecular formula C9H8O3 and a molecular weight of 164.16 g/mol.
3-Formyl-5-methylbenzoic acid (C9H8O3) 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 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.
CATO manufactures 3-Formyl-5-methylbenzoic 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 | C9H8O3 |
| Molecular Weight | 164.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Formyl Standards
- 5-Formyl-2-methylbenzoic acid (CAS 105650-34-8)
- 3-Formyl-2-methylbenzoic acid (CAS 1289037-66-6)
- n-(4-Formyl-2-pyridyl)acetamide (CAS 149141-10-6)
- 2-Formyl-5-methylbenzoic acid (CAS 150867-03-1)
- 2-Formyl-3-methylbenzoic acid (CAS 169739-62-2)
- 2-Formyl-4-methylbenzoic acid (CAS 61099-10-3)
- 2-Formyl-6-methylbenzoic acid (CAS 20771-96-4)
- 3-Formyl-4-methylbenzoic Acid (CAS 69526-89-2)
Recommended Standards
- 3-Formylphenyl acetate (CAS 34231-78-2)
- 3-Ethylisoxazolo[5,4-d]pyrimidin-4-amine (CAS 91997-08-9)
- 3-Hydroxy-4-methylisobenzofuran-1(3H)-one (CAS 72288-75-6)
- 3-Ethyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (CAS 27511-84-8)
- 3-Methyloxetan-3-ol (CAS 162816-08-2)
- 1-Bromo-5-chloro-2,4-difluorobenzene (CAS 914636-89-8)
- 6-Bromo-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole Hydrochloride (CAS 1059630-11-3)
- 2-(3,4-Dimethyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)acetic acid (CAS 883550-06-9)
- Dopamine Impurity 17 (CAS 1129-53-9)
- Propyl 2-amino-4-(4-methoxyphenyl)-5-methylthiophene-3-carboxylate (CAS 905011-75-8)
- 5-(4-Bromo-2-ethylphenyl)oxazole (CAS 2364585-30-6)
- 3-chlorobenzofuro[2,3-c]pyridine (CAS 2340379-27-1)
- (3beta,6α,12beta,20E)-Dammar-20(22)-ene-3,6,12,25-tetrol (CAS 97744-95-1)
- [D-His1]-Semaglutide (CAS CATO-C4X-2226127)
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