31667

氯霉素，大包装

VETRANAL^®, analytical standard

• 别名: D-(−)-苏-2,2-二氯-N-[β-羟基-α-(羟甲基)-β-(4-硝基苯基)乙基]乙酰胺, D-(−)-苏-2-二氯乙酰胺基-1-(4-硝基苯基)-1,3-丙二醇, D-苏-2,2-二氯-N-β[-羟基-α-(羟甲基)-4-硝基苯乙基]乙酰胺, 氯霉素
• 线性分子式: Cl₂CHCONHCH(CH₂OH)CH(OH)C₆H₄NO₂
• CAS号: 56-75-7
• 分子量: 323.13
• Beilstein: 2225532
• EC號碼: 200-287-4
• MDL號碼: MFCD00078159
• 分類程式碼代碼: 41116107
• PubChem物質ID: 329753874
• NACRES: NA.24

属性

• 等級: analytical standard
• 品質等級: 100
• 產品線: VETRANAL^®
• 化驗: ≥98% (HPLC)
• 儲存期限: limited shelf life, expiry date on the label
• 技術: HPLC: suitable; gas chromatography (GC): suitable
• mp: 149-153 °C (lit.)
• 溶解度: H₂O: insoluble 100% (practically)
• 應用: clinical testing
• 格式: neat
• SMILES 字串: OC[C@@H](NC(=O)C(Cl)Cl)[C@H](O)c1ccc(cc1)[N+]([O-])=O
• InChI: 1S/C11H12Cl2N2O5/c12-10(13)11(18)14-8(5-16)9(17)6-1-3-7(4-2-6)15(19)20/h1-4,8-10,16-17H,5H2,(H,14,18)/t8-,9-/m1/s1
• InChI 密鑰: WIIZWVCIJKGZOK-RKDXNWHRSA-N

说明

一般說明

Chloramphenicol (CAP) is an antibiotic which was first isolated from Streptomyces venezuelae. It has a nitrobenzene moiety which may be responsible for aplastic anaemia.1 It is often used for bacterial selection in molecular biology applications at 10-20 μg/mL and as a selection agent for transformed cells containing chloramphenicol reistance genes.
This grade has the standard for Supelco MIP SPE cartridges. For more information request Supelco Literature T407075, T706024

應用

Chloramphenicol has been used as reference standard in the determination of the concentration of CAP residues in shrimp tissues using LC-MS technique and also in frozen chicken samples (liver, kidney and muscle) using HPLC.

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

生化／生理作用

作用机制：氯霉素通过与50S核糖体亚基结合并阻止氨酰基tRNA附着于核糖体来阻断肽基转移酶步骤，从而抑制细菌蛋白质的合成。 它还抑制线粒体和叶绿体蛋白的合成以及（p）ppGpp的核糖体形成，从而抑制rRNA的转录。

耐药性机制：使用氯霉素乙酰转移酶会使产物乙酰化并使其失活。

抗菌谱：这是一种针对革兰氏阳性和革兰氏阴性细菌的广谱抗生素，主要用于眼科和兽医目的。

注意

Stock solutions should be stored at 2-8°C and are stable at 37°C for 5 days. Aqueous solutions are neutral and stable over a wide pH range, with 50% hydrolysis occurring after 290 days. Use of a borax buffered solution reduces this number to 14%. Solutions should be protected from light as photochemical decomposition results in a yellowing of the solution. Heating aqueous solutions at 115°C for 30 minutes results in a 10% loss of chloramphenicol.

準備報告

Stock solutions can be prepared directly in the vial at any recommended concentration. A solution at 50 mg/mL in ethanol yields a clear, very faint, yellow solution. Degradation of chloramphenicol in aqueous solution is catalyzed by general acids and bases. This rate of degradation is independent of the ionic strength and pH.

法律資訊

VETRANAL is a registered trademark of Merck KGaA, Darmstadt, Germany

安全信息

• 象形圖: GHS08,GHS05
• 訊號詞: Danger
• 危險聲明: H318,H351,H361fd
• 防範說明: P202 - P280 - P305 + P351 + P338 - P308 + P313 - P405 - P501
• 危險分類: Carc. 2 - Eye Dam. 1 - Repr. 2
• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 3
• 個人防護裝備: Eyeshields, Gloves, type P3 (EN 143) respirator cartridges