X-NeuNAc
(Synonyms: 5-溴-4-氯-3-吲哚基-alpha-D-N-乙酰神经氨酸钠盐) 目录号 : GC16527
A chromogenic substrate for neuraminidase
Cas No.:160369-85-7
Sample solution is provided at 25 µL, 10mM.
Km: 0.89 mM for neuraminidase
X-Neu5Ac is a new substrate for chromogenic assay of neuraminidase activity in bacterial expression systems.
Many studies have focused on the functional role of cell surface gangliosides, which are thought to facilitate antigenicity, cell-cell recognition and cell growth regulation. Nacetyl neuraminic acid (Neu5Ac) within gangliosides Plays a key function in these roles. Chromogenic substrates, such as Neu5Ac, are used routinely for cytologic, histologic and spectroscopic analyses of enzyme activity.
In vitro: X-Neu5Ac was hydrolyzed by neuraminidase to release a halogenated product undergoing rapid aerobic oxidation to form the dark blue pigment. Preliminary kinetic studies indicated that X-Neu5Ac was a good and stable substrate for neuraminidase. In addition, X-Neu5Ac would also be hydrolyzed mutant enzymes [1].
In vivo: To visualize extracellular sialidase activity on the membrane surface in the rat brain, acute brain slices were incubated with X-Neu5Ac at pH 7.3. After 1h, myelin-abundant regions showed intense fluorescence in the rat brain. Although the hippocampus showed weak fluorescence in the brain, mossy fiber terminals in the hippocampus showed relatively intense fluorescence. In addition, the fluorescence intensities caused by X-Neu5Ac was correlated with the sialidase activity. Therefore, staining with X-Neu5Ac was specific for sialidase and useful for quantitative analysis of sialidase activities [1].
Clinical trial: N/A
References:
[1] Fujii I,Iwabuchi Y,Teshima T,Shiba T,Kikuchi M. X-Neu5Ac: a novel substrate for chromogenic assay of neuraminidase activity in bacterial expression systems. Bioorg Med Chem.1993 Aug;1(2):147-9.
[2] Minami A,Shimizu H,Meguro Y,Shibata N,Kanazawa H,Ikeda K,Suzuki T. Imaging of sialidase activity in rat brain sections by a highly sensitive fluorescent histochemical method. Neuroimage.2011 Sep 1;58(1):34-40.
Cas No. | 160369-85-7 | SDF | |
别名 | 5-溴-4-氯-3-吲哚基-alpha-D-N-乙酰神经氨酸钠盐 | ||
化学名 | sodium;(2S,4S,6R)-5-acetamido-2-[(5-bromo-4-chloro-1H-indol-3-yl)oxy]-4-hydroxy-6-[(1S,2S)-1,2,3-trihydroxypropyl]oxane-2-carboxylate | ||
Canonical SMILES | CC(=O)NC1C(CC(OC1C(C(CO)O)O)(C(=O)[O-])OC2=CNC3=C2C(=C(C=C3)Br)Cl)O.[Na+] | ||
分子式 | C19H21BrClN2NaO9 | 分子量 | 559.72 |
溶解度 | ≥ 28mg/mL in DMSO | 储存条件 | Store at -20°C |
General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 储备液的保存方式和期限:-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。 为了提高溶解度,请将管子加热至37℃,然后在超声波浴中震荡一段时间。 |
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Shipping Condition | 评估样品解决方案:配备蓝冰进行发货。所有其他可用尺寸:配备RT,或根据请求配备蓝冰。 |
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1 mg | 5 mg | 10 mg |
1 mM | 1.7866 mL | 8.933 mL | 17.8661 mL |
5 mM | 0.3573 mL | 1.7866 mL | 3.5732 mL |
10 mM | 0.1787 mL | 0.8933 mL | 1.7866 mL |
第一步:请输入基本实验信息(考虑到实验过程中的损耗,建议多配一只动物的药量) | ||||||||||
给药剂量 | mg/kg | 动物平均体重 | g | 每只动物给药体积 | ul | 动物数量 | 只 | |||
第二步:请输入动物体内配方组成(配方适用于不溶于水的药物;不同批次药物配方比例不同,请联系GLPBIO为您提供正确的澄清溶液配方) | ||||||||||
% DMSO % % Tween 80 % saline | ||||||||||
计算重置 |
计算结果:
工作液浓度: mg/ml;
DMSO母液配制方法: mg 药物溶于 μL DMSO溶液(母液浓度 mg/mL,
体内配方配制方法:取 μL DMSO母液,加入 μL PEG300,混匀澄清后加入μL Tween 80,混匀澄清后加入 μL saline,混匀澄清。
1. 首先保证母液是澄清的;
2.
一定要按照顺序依次将溶剂加入,进行下一步操作之前必须保证上一步操作得到的是澄清的溶液,可采用涡旋、超声或水浴加热等物理方法助溶。
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Quality Control & SDS
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- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
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