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
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线性分子式:
Cl2CHCONHCH(CH2OH)CH(OH)C6H4NO2
化学文摘社编号:
分子量:
323.13
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
EC Number:
200-287-4
Beilstein/REAXYS Number:
2225532
MDL number:
Quality Level
InChI key
WIIZWVCIJKGZOK-RKDXNWHRSA-N
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
SMILES string
OC[C@@H](NC(=O)C(Cl)Cl)[C@H](O)c1ccc(cc1)[N+]([O-])=O
grade
analytical standard
product line
VETRANAL®
assay
≥98% (HPLC)
shelf life
limited shelf life, expiry date on the label
technique(s)
HPLC: suitable, gas chromatography (GC): suitable
mp
149-153 °C (lit.)
solubility
H2O: insoluble 100% (practically)
application(s)
clinical testing
format
neat
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General description
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
This grade has the standard for Supelco MIP SPE cartridges. For more information request Supelco Literature T407075, T706024
Application
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.
Biochem/physiol Actions
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。
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。
Preparation Note
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.
Legal Information
VETRANAL is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
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.
signalword
Danger
hcodes
Hazard Classifications
Carc. 2 - Eye Dam. 1 - Repr. 2
存储类别
11 - Combustible Solids
wgk
WGK 3
ppe
Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
法规信息
涉药品监管产品
此项目有
Determination of chloramphenicol residues in shrimps by liquid chromatography-mass spectrometry.
Ramos M
Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences, 791(1-2), 31-38 (2003)
Chloramphenicol residues in chicken liver, kidney and muscle: a comparison among the antibacterial residues monitoring methods of Four Plate Test, ELISA and HPLC.
Tajik H
Food And Chemical Toxicology, 48(8-9), 2464-2468 (2010)
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