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默克致力于开发创新型产品，从专业角度分析制药行业发展，挖掘客户需求。从基础科学研究到审批生产，默克完整、高效的解决方案，能够帮助新药研发的科学家们，加快药物研发速度，解决药物研发中的难题。

我们提供高效的铂催化剂，例如二氧化铂（也称为Adams催化剂），适于在有机合成中氢化和脱氢各种官能团。其在反应过程中会形成活性Pt催化剂铂黑。利用铂催化能够在炔烃上诱导顺式加成，形成顺式烯烃。使用铂催化剂的两个最重要的转化包括将硝基化合物氢化为胺、以及将酮氢化为醇。值得注意的是，烯烃的还原可以在硝基存在下用Pt催化剂Adams催化剂进行，而硝基不会被还原。将硝基化合物还原成胺时，铂催化剂表现优于钯催化剂，可最大限度避免氢解作用。该Pt催化剂还用于磷酸苯酯氢解——钯催化剂无此能力。

癌症研究人员采用 3D 细胞培养的5个原因：近期文献综述

许多癌症模型系统可用于调查疾病机制和筛选疗法。虽然所有的模型都提供了有关癌症生物学的重要信息。

杂化钙钛矿太阳能电池最新进展

近几十年来，人们对于环境可持续、商业可行的能源的迫切需求，催生并推动了大量致力实现低生产成本、高能效发电系统的研究工作。

MSI检测和IHC

结直肠癌是大多数西方国家居民中普遍发生的疾病，仅次于肺癌。

推荐单核细胞标准分离方法

以下操作步骤已接受Ficoll-Paque PLUS评估，推荐用于分离正常血样以尽可能提高可重现性。

FITC标记多糖

包括FITC-葡聚糖、FITC-DEAE-葡聚糖(FDD)、FITC-羧甲基 - 葡聚糖（FCM-葡聚糖）在内的FITC标记多糖的补充信息。本页面主要介绍了重均分子量对于对应分子尺寸和其他物理性质的影响

Optimize Sample Performance with the SMC^® Plate Washer Evaluation Kit

Learn how to optimize your plate washer performance with the SMC® Plate Washer Evaluation Kit and assay precious samples with confidence.

Analysis of Pesticides in Turmeric Powder by LC/MS/MS and GC/MS/MS after Cleanup with Dual-Layer SPE Cartridge

Pesticide residue testing of turmeric and other (dried) spices is challenging due to their complex compositions and high matrix. An efficient SPE clean-up can be achieved by a new Dual-layer cartridge.

Three Methods for Critical Quality Attribute Determination of Monoclonal Antibodies

Step-by-step workflows for the intact mass analysis, peptide mapping, and N-glycan analysis of the monoclonal antibody― adalimumab, for an accurate characterization of the critical quality attributes (CQAs) to ensure drug safety and efficacy. Read more.

Periodic Table of the Elements

Download the Periodic Table of the Elements with names, atomic mass and number in printable .pdf and image format. Use the periodic table chart by element names in alphabetical order for quick research, reference and lab use.

Thermal Transitions of Homopolymers: Glass Transition & Melting Point

Literature values for the glass transition temperature, (Tg), and melting temperature, (Tm), are given for the more common homopolymers.

Sample Preparation in Ion Exchange Chromatography

This page clarifies sample preparation, buffer exchange and desalting, removal of lipoproteins, phenol red, and low molecular weight contaminants in Ion exchange chromatography.

Performing a Purification of NADP+-dependent dehydrogenases and other enzymes with affinity for NADP+ Using 2’5’ ADP Sepharose 4B and Red Sepharose CL-6B

This page shows how to purify NADP+-dependent dehydrogenases and other enzymes with affinity for NADP+ by affinity chromatography using 2’5’ ADP Sepharose 4B and Red Sepharose CL-6B from Cytiva.

Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge

The odor and pungency of ginger is due to the presence of terpenes, gingerols and shogaols. These compounds contribute to the highly complex matrix of ginger, which subsequently presents a challenge in low level analyses of contaminants. A novel 2-layer

Pressure-Temperature Calculator for Solvents

Use the calculator to determine the boiling point or pressure of solvents based on the Antoine Equation and see solvent attributes. View a list of products based on the solvent CAS number.

Nucleic Acid Electrophoresis Protocols & Introduction

An introduction to Nucleric Acid electrophoresis and standard protocols for Agarose gel electrophoresis for DNA, RNA & polyacrylamide gel electrophoresis for DNA.

Achieving High Efficiency in Organic Light-Emitting Devices

Electroluminescence of organic molecules has been a wellknown phenomenon for more than 50 years.

Solubility Table of Compounds in Water at Temperature

Check the solubility of 128 common inorganic compounds (salts and acids) in water at different temperatures from 0 degrees Celsius to 100 C. Compound formulas are also given in this table of solubility in relation to temperature.

Dextran and Related Polysaccharides

Learn about C6H10O6 or dextran formation, classes and naming. Dextrans are polysaccharides with molecular weights ≥1,000 Dalton, which have a linear backbone of α-linked d-glucopyranosyl repeating units.

Sepharose XL – for selected proteins that require very high binding capacity to increase productivity, easy scale-up

This page covers how and when to use Sepharose XL media for purification of proteins.

Sample Preparation for Affinity Chromatography in Specific Groups of Biomolecules

Multiplexed Evaluation of Soluble Immune-Checkpoint Molecules | MILLIPLEX® Assays

Research evaluating immune checkpoints may help identify those likely to benefit from PD-1/PD-L1 immunotherapy and reveal new immunotherapy targets for future investigation. See how the MILLIPLEX® Human Immuno-Oncology Checkpoint Protein Panel 2 was used to multiplex immune checkpoint molecules for

Cultrex® 3-D Culture Matrix™ Rat Collagen I Protocol

3-D Culture Matrix™ Collagen I may be used as a gel on which to grow cells or a media additive alone or in concert with other basement membrane components to study cellular growth and differentiation in three dimensions in vitro.

GPCR Markers for Cancer Research

Explore the role of some selected GPCR markers in cancer research development and treatment, including neurohormonal GPCRs, rhodopsin-like GPCRs, and more.

Sample Preparation for Chromatographic Purification

This page discusses various aspects of sample preparation for chromatographic purification.

Guidelines for Bioassays on MultiScreen Filter Plates: Protein Binding and Cell Loading

Guidelines for various bioassays on the MultiScreen system, which makes it possible to carry out an assay from sample incubation to scintillation counting in a 96-well plate.

Simplified LC-MS/MS Method for Glyphosate, AMPA, and Glufosinate in Oat-Based Cereals

A simplified LC-MS/MS method to determine glyphosate and related compounds using a Supel™ Carbon LC U/HPLC column for stability under higher pH conditions and sufficient retention for the polar analytes in the presence of methanol as an extraction solvent.

Bio-Inspired “Green” Synthesis of Nanomaterials and their Applications

Silica is a very popular inorganic nanomaterial used in a wide range of applications including fillers for rubber, catalyst supports, separation media, carriers in food and agriculture, and abrasive/anticaking agents in cosmetics. It is also widely believed to be an

Properties of Mononuclear Cells Isolated by the Ficoll-Paque Method

The effects of the mononuclear cell separation method described by Bøyum procedure are noted below, since research situations may arise in which they are significant.

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