2-Ethoxy-5-methoxyphenylboronic acid CAS 957065-85-9
| CAS No. | 957065-85-9 |
| Molecular Formula | C9H13BO4 |
| Molecular Weight | 196.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2-Ethoxy-5-methoxyphenylboronic acid is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2-Ethoxy-5-methoxyphenylboronic acid (CAS 957065-85-9), molecular formula C9H13BO4 and molecular weight 196.01 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, 2-Ethoxy-5-methoxyphenylboronic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 196.01 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C9H13BO4 |
| Molecular Weight | 196.01 g/mol |
| 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
Related Ethoxy Standards
- (2-Ethoxy-3-methoxyphenyl)boronic acid (CAS 1107041-17-7)
- (4-Ethoxy-3-methoxyphenyl)boronic acid (CAS 1189126-30-4)
- (4-Ethoxy-2-methoxyphenyl)boronic acid (CAS 1207443-48-8)
- (3-Ethoxy-4-methoxyphenyl)boronic acid (CAS 915201-13-7)
- 2-Ethoxy-6-methoxyphenylboronic acid (CAS 2377606-71-6)
- 3-Ethoxy-5-methoxyphenylboronic acid (CAS 2121511-92-8)
- 2-Ethoxy-2-(trifluoromethyl)cyclopentan-1-one (CAS 2812356-11-7)
- Methyl 4-ethoxy-2-hydroxybenzoate (CAS 102232-45-1)
Recommended Standards
- 2,5-Dimethoxy-4-methylphenylboronic acid (CAS 956429-07-5)
- 2,4-Dimethoxy-6-methylbenzeneboronic acid, 97% (CAS 202390-71-4)
- 2-Phenyl-1,3,2-benzodioxaborole (CAS 5747-23-9)
- 2-(1-Hydroxyethyl)-5-methoxyphenylboronic acid (CAS 2096332-52-2)
- 7'-Bromospiro[cyclobutane-1,2'-thiochroman]-4'-one 1',1'-dioxide (CAS 2198384-34-6)
- Fudosteine (CAS 13189-98-5)
- 4-Azido-L-phenylalanine Hydrochloride (CAS 34670-43-4)
- Benzo[c]isoxazole-5-carboxylic acid (CAS 1509783-03-2)
- 1-[(R)-3-(Benzyl-isopropyl-amino)-piperidin-1-yl]-2-chloro-ethanone (CAS 1354019-92-3)
- 2-Propenoic acid, 2-methyl-, polymer with ethenylbenzene and 2-hydroxypropyl 2-methyl-2-propenoate (CAS 68239-97-4)
- 4-((4-Chlorophenoxy)methyl)benzimidamide hydrochloride (CAS 1267321-20-9)
- Anagrelide Impurity 2 (CAS 1020243-02-0)
- (R)-Octahydropyrazino[2,1-c][1,4]oxazine (CAS 508241-14-3)
- Semaglutide impurity 77 (CAS CATO-C4X-222677)
Why CATO?
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