(R)-2-Hydroxy-2-(2-methoxyphenyl)acetic acid CAS 4023-92-1
| CAS No. | 4023-92-1 |
| Molecular Formula | C9H10O4 |
| Molecular Weight | 182.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(R)-2-Hydroxy-2-(2-methoxyphenyl)acetic acid (CAS 4023-92-1), molecular formula C9H10O4 and molecular weight 182.17 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, (R)-2-Hydroxy-2-(2-methoxyphenyl)acetic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 182.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C9H10O4 |
| Molecular Weight | 182.17 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related R Standards
- 2-(2-Hydroxy-4-methylphenoxy)acetic acid (CAS 1022729-31-2)
- 2-Hydroxy-2-(2-methoxyphenyl)acetic acid (CAS 10408-29-4)
- 2-Hydroxy-2-(4-hydroxy-3-(hydroxymethyl)phenyl)acetaldehyde (CAS 1239368-65-0)
- 2-Hydroxy-5-methoxy-4-methylbenzoic acid (CAS 1378826-98-2)
- (S)-2-Hydroxy-3-phenoxypropanoic acid (CAS 140460-45-3)
- 2-Hydroxy-4,5-dimethoxybenzaldehyde (CAS 14382-91-3)
- 4-Hydroxy-4,5,6,7-tetrahydro-1-benzofuran-3-carboxylic acid (CAS 1520859-18-0)
- 6-Hydroxy-3-methoxy-2-methylbenzoic acid (CAS 17155-46-3)
Recommended Standards
- (7-Methoxybenzo[d][1,3]dioxol-5-yl)methanol (CAS 22934-59-4)
- (R)-2-Hydroxy-2-(4-methoxyphenyl)acetic Acid (CAS 20714-89-0)
- (3-Methoxyphenoxy)acetic Acid (CAS 2088-24-6)
- (R)-2-Hydroxy-3-(4-hydroxyphenyl)propanoic Acid (CAS 89919-57-3)
- 2-Chloro-5-(difluoromethyl)-3-nitropyridine (CAS 1805302-57-1)
- N-(Prop-2-yn-1-yl)benzo[d]oxazol-2-amine (CAS 85902-42-7)
- (R)-1-(4-Ethoxyphenyl)ethan-1-ol (CAS 225920-04-7)
- 3'-Hydroxy-[1,1'-biphenyl]-2-carboxylic acid (CAS 92379-10-7)
- 7-Methoxy-3-methyl-1-benzofuran-2-carboxylic acid (CAS 18703-80-5)
- (1-Methyl-1H-indazol-3-yl)methanamine dihydrochloride (CAS 1093860-45-7)
- 2,5,6,7,8,9-hexahydropyrido[4,3-b]indol-1-one (CAS 55052-69-2)
- Diphenoxylate Impurity 4 (CAS 84255-02-7)
- 2-(2,4-Dichlorophenyl)pentan-1-ol (CAS 341029-48-9)
- Liraglutide Impurity 18 TFA Salt (CAS CATO-C4X-199218)
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