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2-Methoxynaphthalene

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Products Intro: Product Name:2-Methoxynaphthalene
CAS:93-04-9
Purity:98%(Min,HPLC) Package:100g;1kg;5kg,10kg,25kg,50kg
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CAS:93-04-9
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Products Intro: Product Name:Naproxen EP impurity M
CAS:93-04-9
Purity:90%+ Package:10mg, 25mg, 50mg, 100mg, Other scale please email Sales@pipitech.com Remarks:2-methoxynaphthalene (nerolin)
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Products Intro: Product Name:2-Methoxynaphthalene
CAS:93-04-9
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Lastest Price from 2-Methoxynaphthalene manufacturers

  • 2-Methoxynaphthalene
  • US $0.00-0.00 / 公斤
  • 2020-02-26
  • CAS: 93-04-9
  • Min. Order: 100G
  • Purity: 99.0%+
  • Supply Ability: 100 tons
  • 2-Methoxynaphthalene
  • US $1.00 / KG
  • 2019-07-12
  • CAS:93-04-9
  • Min. Order: 1KG
  • Purity: 99%
  • Supply Ability: 1ton
2-Methoxynaphthalene Basic information
Product Name:2-Methoxynaphthalene
Synonyms:Naproxen Impurity 13(Naproxen EP Impurity M);2-Methoxynaphthaleneodium salt hydrate;NEROLINE YARA YARA;NEROLIN YARA YARA;NAPROXEN IMP M;2-NAPHTHYL METHYL ETHER;2-METHOXYNAPHTHALENE;methyl β-naphthyl ether
CAS:93-04-9
MF:C11H10O
MW:158.2
EINECS:202-213-6
Product Categories:Aromatics, Impurities, Pharmaceuticals, Intermediates & Fine Chemicals;Aromatics;Food & Feed ADDITIVES;Impurities;Intermediates & Fine Chemicals;Pharmaceuticals;Naphthalene derivatives
Mol File:93-04-9.mol
2-Methoxynaphthalene Structure
2-Methoxynaphthalene Chemical Properties
Melting point 70-73 °C(lit.)
Boiling point 274 °C(lit.)
density 1.064 g/mL at 25 °C(lit.)
FEMA 4704 | BETA-NAPHTHYL METHYL ETHER
refractive index 1.5440 (estimate)
Fp 272-274°C
storage temp. Store below +30°C.
solubility H2O: soluble (completely)
form Crystalline Solid
color White to yellow-brown
Water Solubility INSOLUBLE
JECFA Number1257
Merck 14,5997
BRN 1859408
Stability:Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKeyLUZDYPLAQQGJEA-UHFFFAOYSA-N
CAS DataBase Reference93-04-9(CAS DataBase Reference)
NIST Chemistry ReferenceNaphthalene, 2-methoxy-(93-04-9)
EPA Substance Registry SystemNaphthalene, 2-methoxy- (93-04-9)
Safety Information
Safety Statements 22-24/25
RIDADR UN 3077 9 / PGIII
WGK Germany 2
RTECS QJ9468750
TSCA Yes
HS Code 29093090
ToxicityLD50 oral in rat: > 5gm/kg
MSDS Information
ProviderLanguage
Methyl 2-naphthyl ether English
SigmaAldrich English
ACROS English
ALFA English
2-Methoxynaphthalene Usage And Synthesis
Descriptionβ-Naphthyl methyl ether has an intensely sweet, floral odor suggestive of orange blossoms. It is free from naphthol by-odor. It has a sweet, strawberry taste. This may be prepared from potassium β-naphthol and methyl chloride at 300°C; by methylation of β-naphthol with dimethyl sulfate or by direct esterification with methyl alcohol.
Chemical Propertiesβ-Naphthyl methyl ether has an intensely sweet, floral odor suggestive of orange blossoms; free from naphthol by-odor. It has a sweet, strawberry taste
Chemical Propertieswhite powder
Chemical PropertiesMethyl 2-Naphthyl Ether forms white crystals (mp 73–74°C) with an intense orange blossom odor.
Uses2-Methoxynaphthalene is an Impurity of the non-steroidal anti-inflammatory Naproxen (N377525).
PreparationFrom postassium β-naphthol and methyl chloride at 300°C; by methylation of β-naphthlol with dimethyl sulfate or by direct esterification with methyl alcohol
Synthesis Reference(s)Tetrahedron, 48, p. 6439, 1992 DOI: 10.1016/S0040-4020(01)88233-8
Tetrahedron Letters, 22, p. 3463, 1981 DOI: 10.1016/S0040-4039(01)81932-8
Chemical SynthesisPreparation of 2-Methoxynaphthalene from 2-naphthol.
Principle: Phenols can be methylated to give methyl ethers. Methylation can be done either by using diazomethane or dimethyl sulphate in alkaline medium.
Reaction:
Preparation of 2-Methoxynaphthalene from 2-naphthol
Procedure: Take 0.5 g 2-naphthol and 0.2 g NaOH in 5 ml distilled water in a beaker (25 ml). Heat on a wire gauze to obtain a clear solution. Cool the solution (10-15°C) and then add 0.35 ml dimethyl sulphate drop wise. After the addition is over, warm the mixture for one hour at 70-80°C and then cool. Filter the product and wash it with 10% sodium hydroxide solution and then with water. Dry the product, record the practical yield and re-crystallize it.
Re-crystallization: Dissolve the crude product in minimum amount of ethyl alcohol in a beaker by heating on a water bath. Filter the hot solution and cool the filtrate. Filter the white crystals of the product. Dry and record the melting point and TLC (using toluene as solvent).
Purification MethodsFractionally distil the ether under vacuum. Crystallise it from absolute EtOH, aqueous EtOH, *C6H6, pet ether or n-heptane, and dry it under vacuum in an Abderhalden pistol or distil it in vacuo. The picrate has m 118o (from EtOH or CHCl3). [Kikuchi et al. J Phys Chem 91 574 1987, Beilstein 6 III 2969, 6 IV 4257.]
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