2-Hydroxy-4,6-dimethoxybenzoic acid, 97% CAS 3187-19-7
| CAS No. | 3187-19-7 |
| Molecular Formula | C9H10O5 |
| Molecular Weight | 198.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2-Hydroxy-4,6-dimethoxybenzoic acid, 97% (CAS 3187-19-7), molecular formula C9H10O5 and molecular weight 198.17 g/mol, is a CATO reference standard with documented purity and traceability.
2-Hydroxy-4,6-dimethoxybenzoic acid, 97% (C9H10O5) 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).
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 | C9H10O5 |
| Molecular Weight | 198.17 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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.) | 1957 |
Related Hydroxy Standards
- 2-Hydroxy-3-(2-hydroxyethoxy)benzoic acid (CAS 1038374-86-5)
- 5-Hydroxy-2,3-dimethoxybenzoic acid (CAS 116530-57-5)
- 2-Hydroxy-3,6-dimethoxybenzoic acid (CAS 1202796-53-9)
- 2-Hydroxy-4-(2-hydroxyethoxy)benzoic acid (CAS 163451-82-9)
- 2-Hydroxy-3,5-dimethoxybenzoic acid (CAS 61637-60-3)
- 3-Hydroxy-2,5-dimethoxybenzoic acid (CAS 204849-22-9)
- Ethyl 4-hydroxy-6-methyl-2-oxo-2H-pyran-5-carboxylate (CAS 66533-46-8)
- Ethyl 5-hydroxy-2-methyl-4-oxo-4H-pyran-3-carboxylate (CAS 944269-40-3)
Recommended Standards
- 2-Methoxy-2’,4’,6’-trihydroxyacetophenone (CAS 55317-02-7)
- 2-Fluoro-5-nitrophenylisothiocyanate (CAS 340719-39-3)
- 3-(3,4-Difluorophenyl)-2-methylacrylic acid (CAS 32004-55-0)
- 2-Fluoro-1-nitro-4-thiocyanatobenzene (CAS 2149598-30-9)
- 2-{[(tert-butoxy)carbonyl]amino}-4-methylpent-4-enoic acid (CAS 156047-41-5)
- 2-Cyclopropyl-N-(cyclopropylmethyl)ethan-1-amine (CAS 1249154-28-6)
- (2-Amino-5-fluoropyridin-3-yl)methanol (CAS 1097264-95-3)
- 2-(3-Aminoazetidin-1-yl)acetonitrile (CAS 1485541-49-8)
- 1-(3,4-Dimethyl-benzenesulfonyl)-cyclopropanecarboxylic acid 1-(3,4-dimethyl-benzenesulfonyl)-cyclopropane-carboxylic acid 1-[(3,4-dimethylphenyl)sulfonyl]cyclopropanecarboxylic acid 505071-93-2 (CAS 505071-93-2)
- Allyl biphenyl-4-ylcarbamate (CAS 1415560-54-1)
- 1-(3-Amino-5-methylphenyl)ethyl 1H-pyrazole-4-carboxylate (CAS 121716-27-6)
- 3-Cyclopropyl-5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyrimidine (CAS 1365988-10-8)
- (2S,4aR,7R,7aR)-7-Hydroxy-2-phenyltetrahydro-6H-furo[3,2-d][1,3]dioxin-6-one (CAS 131614-83-0)
- Glucagon (1-29) (CAS 16941-32-5)
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