2-Carboxy-4,5-dimethoxyphenylboronic acid CAS 1256345-91-1
| CAS No. | 1256345-91-1 |
| Molecular Formula | C9H11BO6 |
| Molecular Weight | 225.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-Carboxy-4,5-dimethoxyphenylboronic 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.
CATO supplies 2-Carboxy-4,5-dimethoxyphenylboronic acid (CAS 1256345-91-1), a certified reference material (molecular formula C9H11BO6, MW 225.99 g/mol) for analytical method development and quality control.
Structurally, 2-Carboxy-4,5-dimethoxyphenylboronic acid (C9H11BO6) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.5, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 225.99 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C9H11BO6 |
| Molecular Weight | 225.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 4.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Carboxy Standards
- 1-(2-Carboxy-2-oxoethyl)-4-hydroxycyclohexa-2,5-diene-1-carboxylic acid (CAS 126-49-8)
- 1-(1-Carboxy-3-methylbutyl)-4,5-dimethyl-1h-imidazole 3-oxide (CAS 126263-09-0)
- 2-(Carboxy(hydroxy)methyl)-5-chlorobenzo[d]oxazole (CAS 1542340-17-9)
- 2-(Carboxy(hydroxy)methyl)-7-chlorobenzo[d]oxazole (CAS 1804450-78-9)
- 2-(Carboxy(hydroxy)methyl)-4-chlorobenzo[d]oxazole (CAS 1806488-51-6)
- 2-(Carboxy(hydroxy)methyl)-5-methoxybenzo[d]oxazole (CAS 1539761-87-9)
- 2-(Carboxy(hydroxy)methyl)-4-methoxybenzo[d]oxazole (CAS 1803746-59-9)
- 2-(Carboxy(hydroxy)methyl)benzo[d]oxazole-6-methanol (CAS 1804080-29-2)
Recommended Standards
- 6-Bromo-2,3,4-trifluoroaniline (CAS 122375-82-0)
- 3-Bromo-2,5,6-trifluoroaniline (CAS 1269440-68-7)
- 4-Bromo-3-(trifluoromethyl)pyridine (CAS 1060801-89-9)
- 2-Bromo-3,4,6-trifluoroaniline (CAS 1481-21-6)
- Methyl 3-methoxybenzimidate hydrochloride (CAS 159417-02-4)
- Methyl 3-bromo-4-(tert-butoxy)benzoate (CAS 1131594-31-4)
- Ethyl 2-(thietan-3-yl)acetate (CAS 1637751-58-6)
- 3-bromoimidazo[1,5-a]pyridine (CAS 1263057-86-8)
- 4-(2-(4-Oxoquinazolin-3(4H)-yl)acetamido)benzamide (CAS 374678-85-0)
- (2E)-3-(2-Ethoxyphenyl)-1-(2-methoxyphenyl)prop-2-en-1-one (CAS 1175867-24-9)
- 1-(4-Fluorophenyl)-3-phenyl-1H-pyrazole-4-carbaldehyde (CAS 36640-47-8)
- 5-tert-butyl-4-ethyl-1,3-thiazol-2-amine (CAS 34631-47-5)
- Ethyl (E)-1-(2-cyano-3-(dimethylamino)acryloyl)-3-methyl-1H-pyrazole-4-carboxylate (CAS 477713-80-7)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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