1-Chloro-4-methylnaphthalene CAS 17075-39-7
| CAS No. | 17075-39-7 |
| Molecular Formula | C11H9Cl |
| Molecular Weight | 176.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Chloro-4-methylnaphthalene.
1-Chloro-4-methylnaphthalene (CAS 17075-39-7), molecular formula C11H9Cl and molecular weight 176.64 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H9Cl, 1-Chloro-4-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. 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).
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.
As a certified reference material (CRM), 1-Chloro-4-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.) | 1961 |
| 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-ethyl-5-methyl-pyrazole-3-carbonyl chloride (CAS 1706456-89-4)
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- 3-Methoxybenzoyl chloride (CAS 1711-05-3)
- 1-methyl-3-(5-methylfuran-2-yl)-1H-pyrazole-4-carboxylic acid (CAS 1152509-79-9)
- Terephthalic Dihydrazide (CAS 136-64-1)
- 5,5'-(2,2-Dichloroethene-1,1-diyl)bis(2-nitrofuran) (CAS 5397-74-0)
- 2,2,3-Tribromo-1,1,1-trifluoropropane (CAS 421-90-9)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
- 3-acetyl-8-ethoxy-2{h}-chromen-2-one (CAS 389065-45-6)
- 5,5′-[(9,9-Dioctyl-9H-fluorene-2,7-diyl)bis(2,1,3-benzothiadiazole-7,4-diylmethylidyne)]bis[3-ethyl-2-thioxo-4-thiazolidinone] (CAS 1644381-95-2)
- 2-Cyano-5-fluorophenylboronic acid (CAS 1375109-01-5)
- 4-(Aminomethyl)-2-cyano-6-(trifluoromethoxy)benzene-1-sulfonyl chloride (CAS 1807018-76-3)
- Des-Pro36-37-Tirzepatide (CAS CATO-CPTD788938)
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