2-Methylnaphthalene-1,5-diol CAS 79786-99-5
| CAS No. | 79786-99-5 |
| Molecular Formula | C11H10O2 |
| Molecular Weight | 174.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2-Methylnaphthalene-1,5-diol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 174.20 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).
2-Methylnaphthalene-1,5-diol (CAS 79786-99-5) is a high-purity analytical reference standard with the molecular formula C11H10O2 and a molecular weight of 174.20 g/mol.
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.
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 | C11H10O2 |
| Molecular Weight | 174.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
Related Methylnaphthalene Standards
- 2-Methylnaphthalene-1,3-diol (CAS 20034-31-5)
- 7-Methylnaphthalene-1,2-dione (CAS 115754-04-6)
- 6-Methylnaphthalene-1,2-dione (CAS 52749-61-8)
- 1-Methylnaphthalene-6-carboxaldehyde (CAS 102606-09-7)
- 5-Methylnaphthalene-1-carbaldehyde (CAS 104306-72-1)
- 7-Methylnaphthalene-1-carboxaldehyde, 97% (CAS 63409-06-3)
- 7-methylnaphthalene-2-carbaldehyde (CAS 52988-18-8)
- 8-methylnaphthalene-1-carbaldehyde (CAS 6549-57-1)
Recommended Standards
- 2-Methylquinazoline-4,6-diamine (CAS 90558-57-9)
- 2-Methyl-5-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 80030-92-8)
- 2-Naphthol-6-methanol, 97% (CAS 309752-65-6)
- 2-Methyl-5-(4-methylphenyl)-1,3,4-oxadiazole (CAS 25877-53-6)
- 1-(2-Methoxyphenyl)piperidin-2-one (CAS 1225919-29-8)
- 6-methoxypyridazine-4-carboxylic acid (CAS 1427202-39-8)
- 4-(([1,1'-Biphenyl]-2-yloxy)methyl)piperidine hydrochloride (CAS 1185061-40-8)
- (Propan-2-yl)(4,5,6,7-tetrahydro-1-benzothiophen-2-ylmethyl)amine hydrochloride (CAS 1208847-07-7)
- (-)-(3S)-3-Hydroxy Quinine (CAS 78549-61-8)
- 6-Methylpyridine-2,3-diol (CAS 4664-12-4)
- 6-Amino-9-benzyl-1-methyl-1H-purin-2(9H)-one (CAS 87469-61-2)
- (2S)-2-[(2-Fluorophenyl)formamido]-3-methylbutanoic acid (CAS 956373-63-0)
- 1,3-Bis(1-benzyl-5-oxopyrrolidin-3-yl)urea (CAS 1370593-69-3)
- Semaglutide impurity 101 (CAS CATO-C4X-2226101)
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