2,4-Dichloro-5-hydroxyphenylboronic acid CAS 1256346-44-7
| CAS No. | 1256346-44-7 |
| Molecular Formula | C6H5BCl2O3 |
| Molecular Weight | 206.82 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,4-Dichloro-5-hydroxyphenylboronic acid (CAS 1256346-44-7), molecular formula C6H5BCl2O3 and molecular weight 206.82 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2,4-Dichloro-5-hydroxyphenylboronic acid (C6H5BCl2O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.5, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 206.82 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,4-Dichloro-5-hydroxyphenylboronic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H5BCl2O3 |
| Molecular Weight | 206.82 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
Related Dichloro Standards
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Recommended Standards
- 7789-33-5 Bromoiodine Hanus solution Iodine according to Hanus for the iodine value determination Iodine bromide Iodine bromide solution Iodine monobromide Iodine monobromide solution (CAS 7789-33-5)
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- 4-chloro-2-ethylthieno[2,3-d]pyrimidine (CAS 56844-11-2)
- 4-chloro-2,7-dimethyl-thieno[3,2-d]pyrimidine (CAS 936837-34-2)
- 2-Methyl-4,5-dihydro-1,3,4-benzoxadiazepin-5-one (CAS 144760-62-3)
- 3-(3,5-dimethyl-1H-1,2,4-triazol-1-yl)piperidine (CAS 1249679-72-8)
- Quarfloxin (CAS 865311-47-3)
- 4-Bromo-3,5-difluoro-2-((trimethylsilyl)ethynyl)aniline (CAS 1467060-37-2)
- 3-[3-(propan-2-yl)phenyl]butanal (CAS 125109-85-5)
- 3,3,7-Trimethylindolin-2-one (CAS 19501-89-4)
- (N-tert-butyloxycarbonyl)aminoethyl isocyanide (CAS 215254-91-4)
- Ethyl 2-amino-6-methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 76981-71-0)
- (4-Decyl-2,3-difluorophenyl)boronic acid (CAS 147223-09-4)
- Tirzepatide Impurity 50 (CAS CATO-C4X-324050)
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