2-Methyinaphtho[1,2-d]thiazole

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CAS:2682-45-3
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2-Methyinaphtho[1,2-d]thiazole manufacturers

2-Methyinaphtho[1,2-d]thiazole Basic information
Product Name:2-Methyinaphtho[1,2-d]thiazole
Synonyms:2-d]thiazole,2-methyl-naphtho[;2-d]thiazole,2-methyl-Naphtho[1;Naphth[1,2-d]thiazole, 2-methyl-;AURORA KA-80;2-METHYLNAPHTHOL[1,2-D]THIAZOLE;2-METHYLNAPHTHO[1,2-D]THIAZOLE;2-METHYLNAPHTHO[1,2-D][1,3]THIAZOLE;2-METHYL-BETA-NAPHTHYLTHIAZOLE
CAS:2682-45-3
MF:C12H9NS
MW:199.27
EINECS:220-240-1
Product Categories:Thiazoles;Intermediates of Dyes and Pigments;BENZOTHIAZOLE;Building Blocks;C12 to C20+;Chemical Synthesis;Heterocyclic Building Blocks
Mol File:2682-45-3.mol
2-Methyinaphtho[1,2-d]thiazole Structure
2-Methyinaphtho[1,2-d]thiazole Chemical Properties
Melting point 95-97 °C(lit.)
Boiling point 168 °C / 5.5mmHg
density 1.1171 (rough estimate)
refractive index 1.5500 (estimate)
storage temp. Keep in dark place,Sealed in dry,Room Temperature
pka1.65±0.30(Predicted)
form powder to crystal
color White to Light yellow
CAS DataBase Reference2682-45-3(CAS DataBase Reference)
NIST Chemistry ReferenceNaphtho[1,2-d]thiazole, 2-methyl-(2682-45-3)
EPA Substance Registry SystemNaphtho[1,2-d]thiazole, 2-methyl- (2682-45-3)
Safety Information
Safety Statements 22-24/25
WGK Germany 3
TSCA TSCA listed
HS Code 29349990
MSDS Information
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2-Methyinaphtho[1,2-d]thiazole English
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2-Methyinaphtho[1,2-d]thiazole Usage And Synthesis
Chemical Propertieslight yellow to beige-brown crystalline powder
Synthesis
1-Amino-2-naphthalenethiol

63512-54-9

Acetic anhydride

108-24-7

2-Methyinaphtho[1,2-d]thiazole

2682-45-3

1. 1-Aminonaphthalene-2-thiol and 20 mg of sodium dodecyl sulfate were added to 20 mL of water and stirred until a homogeneous mixture was formed. 2. 7.5 mmol of ethanoic anhydride was slowly added to the mixture and stirring was continued for 5 minutes. 3. A precipitate was produced from the reaction mixture over a period of 5-10 minutes. 4. The precipitate was collected by filtration, washed twice with 1 mL of water, and subsequently dried under vacuum. 5. The un-precipitated reaction mixture was extracted twice with 25 mL of ethyl acetate. 6. Ethyl acetate was used to extract the unprecipitated reaction mixture twice.6. The organic layers were combined and dried over anhydrous sodium sulfate.7. The solvent was removed under reduced pressure using a rotary evaporator to give 2-methyl-β-naphthothiazole in 70% yield.

References[1] Patent: WO2007/78184, 2007, A1. Location in patent: Page/Page column 14-15
[2] Patent: US2008/200678, 2008, A1. Location in patent: Page/Page column 6
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