Indomethacin

Japanese: インドメタシン
Indomethacin

1-( p -chloro-benzoyl)-5-methoxy-2-methylindole-3-acetic acid. C 19 H 16 ClNO 4 (357.79). This compound is obtained by acylation of the reaction product of p-methoxyphenylhydrazine and acetaldehyde with p-chlorobenzoyl chloride, hydrolysis, and then heating and ring-closing with levulinic acid. White to pale yellow fine crystals. There are two forms with melting points of 155 °C and 162 °C. Soluble in ethanol, ether, and acetone, insoluble in water. Colored yellowish brown by exposure to light. Inhibits cyclooxygenase and inhibits the synthesis of prostaglandins. p K a 4.5. A potent, low-toxicity anti-inflammatory and analgesic. Used for rheumatoid arthritis, gout attacks, and other inflammatory diseases. LD 50 50 mg/kg (mouse, oral). [CAS 53-86-1]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

Japanese:

1-(p-chloro-benzoyl)-5-methoxy-2-methylindole-3-acetic acid.C19H16ClNO4(357.79).ρ-メトキシフェニルヒドラジンとアセトアルデヒドとの反応物をρ-クロロベンゾイルクロリドでアシル化し,加水分解後,レブリン酸と加熱閉環すると得られる.白色~淡黄色の微細な結晶.融点155 ℃ と162 ℃ の2形がある.エタノール,エーテル,アセトンに可溶,水に不溶.光によって黄褐色に着色する.シクロオキシゲナーゼを阻害することによりプロスタグランジンの生合成を抑制する.pKa 4.5.効力が強く,低毒性の消炎,鎮痛薬.関節リウマチ,痛風発作など炎症性疾患に用いる.LD50 50 mg/kg(マウス,経口).[CAS 53-86-1]

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