3,5-D CAS 587-64-4
| CAS No. | 587-64-4 |
| Molecular Formula | C8H6Cl2O3 |
| Molecular Weight | 221.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-D (CAS 587-64-4), molecular formula C8H6Cl2O3 and molecular weight 221.04 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,5-D (C8H6Cl2O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 221.04 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.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C8H6Cl2O3 |
| Molecular Weight | 221.04 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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 |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Recommended Standards
- 2-Cyclohexylidene-butyronitrile (CAS 53153-77-8)
- Lusutrombopag Impurity N2 (CAS 89894-53-1)
- 2,6-Dichloro-4-pyrimidinepropanoic Acid (CAS 212650-39-0)
- 3,5-dichloro-4-hydrazinylbenzoic acid (CAS 887577-44-8)
- (2E)-2-carbamothioyl-3-(2-hydroxyphenyl)prop-2-enamide (CAS 851176-07-3)
- Nonadecanoic Acid 3-(Acetyloxy)-2-hydroxypropyl Ester (CAS 120602-61-1)
- (1R,6S)-3-Boc-7-[(R)-1-phenylethyl]-3,7-diazabicyclo[4.2.0]octane (CAS 1820572-07-3)
- 1-(Aminomethyl)-7-methoxynaphthalene (CAS 57382-45-3)
- 3-Phenyl-8-azabicyclo[3.2.1]octane (CAS 669002-98-6)
- 3-(3H-Imidazo[4,5-c]pyridin-2-yl)aniline (CAS 121717-34-8)
- 4-{[1,1'-Biphenyl]-4-carbonyl}-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid (CAS 1326811-84-0)
- 3-(3-Chloro-4-fluorophenyl)-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid (CAS 1283108-59-7)
- (2-Isobutyl-1H-benzimidazol-1-yl)acetic acid (CAS 717863-10-0)
- TRAF6 Peptide trifluoroacetate salt (CAS 852805-92-6)
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