2-(3-Chloro-4-hydroxyphenyl)-2-hydroxyacetic acid CAS 72198-15-3
| CAS No. | 72198-15-3 |
| Molecular Formula | C8H7ClO4 |
| Molecular Weight | 202.59 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.
CATO supplies 2-(3-Chloro-4-hydroxyphenyl)-2-hydroxyacetic acid (CAS 72198-15-3), a certified reference material (molecular formula C8H7ClO4, MW 202.59 g/mol) for analytical method development and quality control.
Structurally, 2-(3-Chloro-4-hydroxyphenyl)-2-hydroxyacetic acid (C8H7ClO4) 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 202.59 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.
Physical & Chemical Properties
| Molecular Formula | C8H7ClO4 |
| Molecular Weight | 202.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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.) | 1977 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 2-Chloro-1-(2,4,6-trihydroxyphenyl)ethanone (CAS 110865-03-7)
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- Ethyl 3-chloro-2-oxo-2H-pyran-5-carboxylate (CAS 126703-76-2)
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Recommended Standards
- 2-(2-Chloro-4-hydroxyphenoxy)acetic acid (CAS 7417-87-0)
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- 2-(5-Chloro-2-hydroxyphenoxy)acetic acid (CAS 328104-87-6)
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- N-(2-Nitrophenylsulfenyl)-L-threonine (dicyclohexylammonium) salt (CAS 14921-33-6)
- (3-Fluoro-5-methylphenyl)methanamine hydrochloride (CAS 1214344-22-5)
- Pibrentasvir impurity 5 (CAS CATO-C4X-28935)
- 1-(3,5-Dimethoxyphenyl)propan-1-one (CAS 41497-31-8)
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- N-Methoxy-N,3-dimethylbut-2-enamide (CAS 121712-53-6)
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