1-Chloro-3-methylnaphthalene CAS 132277-09-9
| CAS No. | 132277-09-9 |
| Molecular Formula | C11H9Cl |
| Molecular Weight | 176.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Chloro-3-methylnaphthalene is closely related to chlorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-Chloro-3-methylnaphthalene (CAS 132277-09-9) is a high-purity analytical reference standard with the molecular formula C11H9Cl and a molecular weight of 176.64 g/mol.
Owing to chlorine substitution, an aromatic ring system, 1-Chloro-3-methylnaphthalene is typically off-white to pale yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 176.64 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | 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.) | 1994 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 5-Chloro-1H-pyrrolo[2,3-b]pyridin-4-ol (CAS 1015610-47-5)
- 4-Chloro-1H-pyrrolo[2,3-b]pyridin-5-ol (CAS 1020056-82-9)
- (5-Chloro-2-fluorophenyl)(methyl)sulfane (CAS 1071152-05-0)
- 4-chloro-1H-pyrrolo[2,3-b]pyridin-6-ol (CAS 1190321-61-9)
- 2-Chloro-4-fluoro-5-methylbenzenethiol (CAS 1208077-04-6)
- 2-Chloro-N-(1-methylpyrrolidin-3-yl)acetamide (CAS 1247728-15-9)
- 6-chloro-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazine (CAS 1260665-94-8)
- 1-Chloro-3-fluoro-5-(methylsulfanyl)benzene (CAS 1314939-89-3)
Recommended Standards
- (4-Chloro-3-fluorophenyl)(methyl)sulfane (CAS 1314964-99-2)
- 2-Amino-1-(4-chloropiperidin-1-yl)ethanone (CAS 1353946-75-4)
- (R)-2-Chloro-N-(1-methylpyrrolidin-3-yl)acetamide (CAS 1354000-51-3)
- (S)-2-Chloro-N-(1-methylpyrrolidin-3-yl)acetamide (CAS 1354000-88-6)
- 4-Hydroxy-2-methylpyrrolidine-2-carboxamide (CAS 1822551-62-1)
- 2-(chloromethyl)-4-fluoroaniline (CAS 922711-40-8)
- methyl 4-(2-amino-1,3-thiazol-4-yl)-1H-pyrrole-2-carboxylate (CAS 929974-98-1)
- (S)-(9H-Fluoren-9-yl)methyl (1-chloro-1-oxo-3-phenylpropan-2-yl)carbamate (CAS 103321-57-9)
- 3-Amino-8-((2-amino-1,6-dimethylpyrimidin-4(1H)-ylidene)amino)-6-(4-aminophenyl)-5-methylphenanthridin-5-ium bromide hydrobromide (CAS 14222-46-9)
- (1-(3-Methoxybenzyl)cyclopropyl)methanol (CAS 1486641-15-9)
- 5-Ethyl-1,3,4-thiadiazol-2-ol (CAS 1330756-14-3)
- Ethyl 2-(5-chloropyrazin-2-yl)acetate (CAS 1196157-22-8)
- N-(2,5-dimethoxybenzyl)-2-(4-fluorophenyl)ethan-1-amine hydrobromide (CAS 1609404-17-2)
- Glucagon receptor antagonists-2 (CAS 202917-18-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com