2,6-Bis(hydroxymethyl)-4-methoxyphenol CAS 21893-97-0
| CAS No. | 21893-97-0 |
| Molecular Formula | C9H12O4 |
| Molecular Weight | 184.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,6-Bis(hydroxymethyl)-4-methoxyphenol (CAS 21893-97-0), molecular formula C9H12O4 and molecular weight 184.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H12O4, 2,6-Bis(hydroxymethyl)-4-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 184.19 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).
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 | C9H12O4 |
| Molecular Weight | 184.19 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.) | 1963 |
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Recommended Standards
- 2,4,5-trimethoxyphenol (CAS 20491-91-2)
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- 2-Amino-4-phenylfuran-3-carbonitrile (CAS 72982-21-9)
- 2-((4-Ethyl-3-oxo-3,4-dihydropyrido[2,3-b]pyrazin-2-yl)thio)acetic acid (CAS 1242884-38-3)
- 6-bromothieno[3,2-b]pyridin-2-amine (CAS 1638768-57-6)
- N-(1-Phenylethyl)sulfamoyl Chloride (CAS 57053-73-3)
- N*1*-(6-Morpholin-4-yl-3-nitro-4-(trifluoromethyl)-pyridin-2-yl)ethane-1,2-diamine (CAS 1053658-12-0)
- (2-(Benzo[d]thiazol-2-yl)pyridin-3-yl)(2-methylpiperidin-1-yl)methanone (CAS 873857-03-5)
- 4-(3-Aminopyridin-2-yl)piperazin-2-one (CAS 926197-03-7)
- Axitinib Impurity 21 (CAS CATO-C4X-107121)
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- n-(1-(2,3-Dihydrobenzofuran-5-yl)ethyl)propan-1-amine (CAS 1153161-13-7)
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