(r)-4-(1-Hydroxyethyl)-2-methoxyphenol CAS 301526-24-9
| CAS No. | 301526-24-9 |
| Molecular Formula | C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(r)-4-(1-Hydroxyethyl)-2-methoxyphenol (CAS 301526-24-9), molecular formula C9H12O3 and molecular weight 168.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H12O3, (r)-4-(1-Hydroxyethyl)-2-methoxyphenol contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 168.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
As a certified reference material (CRM), (r)-4-(1-Hydroxyethyl)-2-methoxyphenol 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 | C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related r Standards
- 2-(1-Hydroxyethyl)-4-methoxyphenol (CAS 101231-95-2)
- 1-(2-Hydroxyethyl)-3,5-dimethyl-1H-pyrazole-4-carbaldehyde (CAS 1099772-09-4)
- 2-((2-Hydroxyethyl)amino)-1-(1H-pyrrol-2-yl)ethanone (CAS 1353943-87-9)
- 1-(1-(2-Hydroxyethyl)-5-methyl-1H-pyrazol-3-yl)ethanone (CAS 165743-84-0)
- (r)-5-(1-Hydroxyethyl)-2-methoxyphenol (CAS 1841651-93-1)
- 3-(2-hydroxyethyl)-5-methoxyphenol (CAS 1865259-38-6)
- (s)-5-(1-Hydroxyethyl)-2-methoxyphenol (CAS 1867034-30-7)
- (s)-2-(1-Hydroxyethyl)-6-methoxyphenol (CAS 1932522-95-6)
Recommended Standards
- (R)-3-Fluoropyrrolidine-1-sulfonamide (CAS 2165496-71-7)
- (R)-4-(Methylamino)-4,5,6,7-tetrahydrobenzo[d]isoxazol-3-ol (CAS 632367-70-5)
- (R)-2-cyclopropyl-3,4-dihydro-2H-pyran-2-carboxylic acid (CAS 2306246-04-6)
- (R)-Hexahydro-4H-pyrido[1,2-a]pyrazine-1,4(6H)-dione (CAS 36588-50-8)
- 2,4,6-Trichlorophen-3,5-d2-ol (CAS 93951-80-5)
- N-(4-(7,7-Dimethyl-6,8-dioxa-2-azaspiro[3.5]nonane-2-carbonyl)phenyl)acetamide (CAS 1396879-12-1)
- 3-(1-Hydroxyethyl)-4-methyl-1H-pyrrole-2,5-dione (CAS 173418-77-4)
- Celiprolol Impurity 9 (CAS CATO-C4X-24549)
- 5-Chloro-3-methyl-1H-indole-2-carbaldehyde (CAS 40731-16-6)
- N-(7-(3-bromobenzoyl)-2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-4-methylbenzenesulfonamide (CAS 886493-71-6)
- 2-bromothiophen-3-amine hydrochloride (CAS 1803590-15-9)
- (3,4-Difluoro-5-(pentyloxy)phenyl)(methyl)sulfane (CAS 1443335-39-4)
- N-[(1E)-[(Benzyloxy)imino]methyl]-2-(4-fluorophenoxy)-4-methoxypyridine-3-carboxamide (CAS 341966-66-3)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
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