3-chloro-5-ethoxyphenol CAS 1881331-56-1
| CAS No. | 1881331-56-1 |
| Molecular Formula | C8H9ClO2 |
| Molecular Weight | 172.61 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-chloro-5-ethoxyphenol (CAS 1881331-56-1), molecular formula C8H9ClO2 and molecular weight 172.61 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 3-chloro-5-ethoxyphenol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 172.61 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).
CATO manufactures 3-chloro-5-ethoxyphenol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H9ClO2 |
| Molecular Weight | 172.61 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
Related chloro Standards
- (5-Chloro-1,3-phenylene)dimethanol (CAS 1000342-26-6)
- 1-(4-Chloro-1-ethyl-1h-pyrazol-3-yl)ethan-1-one (CAS 1006434-27-0)
- 1-(4-Chloro-1-ethyl-1h-pyrazol-5-yl)ethan-1-one (CAS 1006482-81-0)
- 2-Chloro-5-methoxybenzyl alcohol (CAS 101252-66-8)
- (4-Chloro-3,5-dimethyl-1H-pyrazol-1-yl)-acetaldehyde (CAS 1015939-58-8)
- 2-Chloro-6-isopropoxypyrazine (CAS 1016698-79-5)
- 4-Chloro-6-methoxy-2,5-dimethylpyrimidine (CAS 102074-10-2)
- (2-Chloro-6-methoxyphenyl)methanol (CAS 1038726-89-4)
Recommended Standards
- 2-Chloro-4-methoxy-6-methylphenol (CAS 1824155-21-6)
- rac-(1R,2S)-2-fluorocyclobutane-1-sulfonyl chloride (CAS 1909293-47-5)
- 4-Chloro-2-ethoxyphenol (CAS 18113-10-5)
- 3-chloro-5-(2-hydroxyethyl)phenol (CAS 1934631-42-1)
- (9E,12E,15E)-octadeca-9,12,15-trienoic acid (CAS CATO-C1484970)
- Methyl 2-amino-3-(naphthalen-2-yl)propanoate (CAS 136282-47-8)
- Ethyl 2-(3-fluoro-5-(trifluoromethyl)phenyl)-2-oxoacetate (CAS 1417517-34-0)
- 4-(Pyridazin-3-yl)benzaldehyde (CAS 328125-39-9)
- 2-chloro-5-(trifluoromethoxy)benzo[d]thiazole (CAS 1206541-62-9)
- 2-(2,4-Difluorophenyl)-2-hydroxyacetic acid (CAS 132741-30-1)
- rac Cycloserine-15N,d3 (CAS 1219176-26-7)
- L-Norvaline, N-[(2S)-6,8-difluoro-1,2,3,4-tetrahydro-2-naphthalenyl]-, 1,1-dimethylethyl ester (CAS 1309869-67-7)
- 2-(Benzylthio)-4,5-diphenyl-1-propyl-1H-imidazole (CAS 338412-79-6)
- Tirzepatide Impurity 52 (CAS CATO-C4X-324052)
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