1-Chloro-2-methylnaphthalene CAS 5859-45-0
| CAS No. | 5859-45-0 |
| Molecular Formula | C11H9Cl |
| Molecular Weight | 176.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 1-Chloro-2-methylnaphthalene (CAS 5859-45-0), a certified reference material (molecular formula C11H9Cl, MW 176.64 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H9Cl, 1-Chloro-2-methylnaphthalene contains chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 176.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 1-Chloro-2-methylnaphthalene 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 | C11H9Cl |
| Molecular Weight | 176.64 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 1958 |
| Halogen Content | Cl-containing |
Related Chloro Standards
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- (5-Chloro-2-fluorophenyl)(methyl)sulfane (CAS 1071152-05-0)
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Recommended Standards
- 1-(3-Chloropropyl)-3-methylimidazolidin-2-one (CAS 3367-06-4)
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- 1-(2-chloro-6-hydroxyphenyl)ethan-1-one (CAS 55736-04-4)
- 1-Chloro-8-methylnaphthalene (CAS 84796-01-0)
- Methyl 2-((3-methylpiperidine-1-carbonothioyl)thio)acetate (CAS 852399-62-3)
- 6-Quinolinecarboxylic Acid (CAS 10349-57-2)
- N-(3-(2-Amino-4-methyl-6-oxo-1,6-dihydropyrimidin-5-yl)propyl)-4-methylbenzenesulfonamide (CAS 2954-20-3)
- 6-Chloro-1H-indole-3-carbonyl chloride (CAS 1260794-86-2)
- 2-Chloro-4-hydrazinylbenzoic acid hydrochloride (CAS 41112-74-7)
- 4-(3-Formylphenyl)-2-methylphenol (CAS 1261948-09-7)
- 2,3-Dihydro-3,3-dimethyl-6-benzofurancarboxylic acid (CAS 1147531-58-5)
- 2,6-Dichloro-3,4-dimethylphenol (CAS 1570-67-8)
- Ethyl 4-ethyl-2-isopropylpyrimidine-5-carboxylate (CAS 887411-13-4)
- Semaglutide impurity 106 (CAS CATO-C4X-2226106)
Why CATO?
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