3,5-Dicarboxyphenylboronic Acid CAS 881302-73-4
| CAS No. | 881302-73-4 |
| Molecular Formula | C8H7BO6 |
| Molecular Weight | 209.95 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.
3,5-Dicarboxyphenylboronic Acid (CAS 881302-73-4), molecular formula C8H7BO6 and molecular weight 209.95 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,5-Dicarboxyphenylboronic Acid (C8H7BO6) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.5, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 209.95 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).
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 | C8H7BO6 |
| Molecular Weight | 209.95 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) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Related Dicarboxyphenylboronic Standards
Recommended Standards
- 2-Boronoterephthalic acid (CAS 1351221-58-3)
- Iodobenzene-<SUP>13</SUP>C<SUB>6</SUB> (CAS 104130-35-0)
- 4-Boronophthalic acid (CAS 1072946-35-0)
- 3-Iodo-5-methyl-1,2,4-oxadiazole (CAS 1165694-86-9)
- (4-((3,5-Dimethoxybenzyl)oxy)phenyl)boronic acid (CAS 870718-08-4)
- 2-(4-Oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazin-8-yl)-1H-benzo[d]imidazole-4-carboxamide (CAS 1706430-63-8)
- 2,3,4,5,6-PENTAFLUOROCINNAMIC AcidDISCONTINUED (CAS 719-60-8)
- Ethyl 2,4-difluoro-5-methylphenylacetate (CAS 1803841-53-3)
- 4-Chloro-2-(4-fluorophenyl)-6-methylpyrimidine (CAS 142220-65-3)
- (6-(4-Methylpiperazin-1-yl)pyrazin-2-yl)methanamine (CAS 1211580-24-3)
- 3-Methyl-1H-indol-4-amine (CAS 873056-75-8)
- 4-Amino-2-cyclopropylisoindoline-1,3-dione (CAS 1042635-26-6)
- Boc-Glu(Pip)-OH (CAS 116596-43-1)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
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