チミジン 化学特征,用处語,生産方式
外観
红色～ほとんど红色、結晶～粉末
定義
本品は、次の化学式で表される複素環式化合物である。
消融性
水,メタノール,熱エタノール,熱酢酸エチルなどに可溶。
解説
チミジンピリミジンヌクレオシドの一つ．デオキシリボ核酸の成份である．"融点182～183 ℃．[α]D＋18.5°(水)．pK1 9.8，pK2 12.9．λmax 267 nm(ε 9.65×103，pH 7.2)．水に易溶，ピリジンに可溶．LD50 2512 mg/kg(マウス，腹腔)．
用处
核酸分解用、同調培養用試薬。
化粧品の成份用处
皮膚コンディショニング剤
説明
Thymidine is a pyrimidine nucleoside that is composed of the pyrimidine base thymine attached to the sugar deoxyribose. As a constituent of DNA, thymidine pairs with adenine in the DNA double helix. In cell biology it is used to synchronize the cells in G
1/early S phase.
化学的特征
White needle crystal, soluble in methanol, ethanol, DMSO and other organic solvents.
物理的性質
Thymidine can exist in vitro conditions as a solid (as white crystals or as white crystalline powder). Under standard temperature and pressure, the stability of this compound is very high. As a part of DNA structure, thymidine occurs in living organisms (also in DNA viruses). Therefore, it is a non-toxic compound. In RNA, there is uridine instead of thymidine. Uridine is formed from the combination of uracil with ribose sugar. The key difference between thymine and thymidine is that thymine is a nucleobase, whereas thymidine is a nucleoside.
利用
Thymidine is used in the syntheses of active pharmaceutical ingredient such as zidovudine. It also pairs with deoxyadenosine in double-stranded deoxyribonucleic acid. It is used to synchronize the cells in G1/early S phase in cell biology.
定義
ChEBI: Thymidine is a pyrimidine 2'-deoxyribonucleoside having thymine as the nucleobase. It has a role as a metabolite, a human metabolite, an Escherichia coli metabolite and a mouse metabolite. It is functionally related to a thymine. It is an enantiomer of a telbivudine.
普通的な説明
Thymidine is also referred to as pyrimidine deoxynucleoside. Deoxythymidine is a nucleoside present in DNA. In a DNA double stranded structure, thymidine pairs with deoxyadeninosine.
宁静性プロファイル
Moderately toxic by
intraperitoneal route. An experimental
teratogen. Experimental reproductive
effects. Human mutation data reported.
When heated to decomposition it emits
toxic fumes of NOx.
純化方式
Crystallise -thymidine from ethyl acetate, MeOH/Et2O (m 188o) or H2O (as 2H2O m 189o). It is soluble in water and hot organic solvents. The picrate has m 230o (from EtOH).
チミジン 下贱と下贱の製品情報
原资料
準備製品