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- Sigma-Aldrich
- 进口
- 194484-1G
- 2026年01月20日
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- 详细信息
- 文献和实验
- 技术资料
- 保存条件：
常温
- 保质期：
根据瓶身LOT号查询
- 英文名：
O-(2,3,4,5,6-Pentafluorobenzyl)hydroxylamine hydrochloride
- 库存：
有现货
- 供应商：
浙江羽翔生物科技有限公司
- CAS号：
57981-02-9
- 规格：
1G
属性
质量水平
100
检测方案
≥98%
形式
solid
mp
227 °C (subl.) (lit.)
溶解性
water: soluble 50 mg/mL, clear to slightly hazy, colorless
SMILES字符串
Cl.NOCc1c(F)c(F)c(F)c(F)c1F
InChI
1S/C7H4F5NO.ClH/c8-3-2(1-14-13)4(9)6(11)7(12)5(3)10;/h1,13H2;1H
InChI key
HVMVKNXIMUCYJA-UHFFFAOYSA-N
应用
- 制备含酮基甾体肟。
- 作为衍生化试剂，用于测定血栓素B 2、前列腺素、苦杏仁甙及多种醛类、酮类、酸类。
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文献和实验Chromatographic approaches for determination of low-molecular mass aldehydes in bio-oil.
HPLC-UV and GC/MS determination of aldehydes in bio-oil were evaluated. HPLC-UV preceded by derivatization with 2,4-dinitrophenylhydrazine allows separation and detection of bio-oil aldehydes, but the derivatization affected the bio-oil stability reducing their quantitative applicability. GC/MS determination of aldehydes was reached by derivatization with o-(2,3,4,5,6-pentafluorobenzyl) hydroxylamine hydrochloride. Two approaches for this reaction were evaluated. The first: "in solution derivatization and head space extraction" and the second: "on fiber derivatization SPME", the latter through an automatic procedure. Both sample treatments allows the quantification of most important aliphatic aldehydes in bio-oil, being the SPME approach more efficient. The aldehyde concentrations in bio-oil were ~2% formaldehyde, ~!0.1% acetaldehyde and ~0.05% propionaldehyde.
Pyrrolizidine alkaloid clivorine inhibits human normal liver L-02 cells growth and activates p38 mitogen-activated protein kinase in L-02 cellsAbstractClivorine, a pyrrolizidine alkaloid extracted from Chinese medicinal plant Ligularia hodgsonii
Replication timing by density transfer
-Aldrich (previously from Isotec, which is now part of Sigma-Aldrich) "-N" medium =1.61 g yeast nitrogen base w/o amino acids and ammonium sulfate, 11.1 g succinic acid, 6.67 g NaOH per litre. Pronase : We use
-response related proteins from rice leaf sheath. P r o te o m ic s 3, 527-535. 5. Mathesius, U., Keijzes, G., Natera, S. H. A., Weinman, J. J., Djordevic, M. A.,and Rolfe, B. G. (2001) Establishment of a root proteome reference map
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