2,3-ルチジン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H226：引火性の液体および蒸気

  H302：飲み込むと有害

  H315：皮膚刺激

  H318：重篤な眼の損傷

  H335：呼吸器への刺激のおそれ

• 注意書き

  P261：粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

2,3-ルチジン 価格

MSDS Information

• 2,3-Dimethylpyridine

2,3-ルチジン 化学特性,用途語,生産方法

• 外観

  わずかにうすい黄色～黄褐色、液体

• 化学的特性

  clear colorless to slightly yellow liquid

• 使用

  2,3-Lutidine is a lansoprazole intermediates. It is used as pharmaceutical intermediate.

• 定義

  LOTUS: 2,3-Lutidine is a natural product found in Nicotiana tabacum with data available.

• 純化方法

  Steam distil it from a solution containing about 1.2 equivalents of 20% H2SO4, until ca 10% of the base has been carried over with the non-basic impurities. The acidic solution is then made alkaline, and the base is separated, dried over NaOH or BaO, and fractionally distilled. The distilled lutidine is converted to its urea complex by stirring 100g with 40g of urea in 75mL of H2O, cooling to 5o, filtering at the pump, and washing with 75mL of H2O. The complex, dissolved in 300mL of H2O, is steam distilled until the distillate gives no turbidity with a little solid NaOH. The distillate is then treated with excess solid NaOH, and the upper layer is removed: the aqueous layer is then extracted with diethyl ether. The upper layer and the ether extract are combined, dried (K2CO3), and distilled through a short column. Final purification is by fractional crystallisation using partial freezing. The picrate crystallises from EtOH with m 187-188o. [Kyte et al. J Chem Soc 4454 1960, Beilstein 20 H 243, 20 II 159, 20 III/IV 2765, 20/6 V 15.]

2,3-ルチジン 上流と下流の製品情報

2,3-ルチジン 生産企業

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