81-63-0

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新建SigmaAldrich.cn官网完整订购账户，订购全线生物（biology）/化学（chemistry）/诊断产品，即可享受三个月订单81折特惠，老客户专享满天星升级好礼。

下载可打印的元素周期表，包括元素名称、原子质量和原子序数，供快速参考和实验室使用。

Browse over 50 patient-derived human intestinal organoids from our PDO biobank. Various ages, sex, tissue origin and diseases available (normal, tumor organoids, ulcerative colitis).

US EPA Method 325B Compliance

The new US federal regulation 40 CFR Parts 60 and 63 – Petroleum Refinery Sector Risk and Technology Review and New Source Performance Standards, is an update to the previous version.

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.

Photometric Determination of Iron in Beer

Rapid and easy analysis of iron in pale beer samples with 1,10-Phenanthroline using spectrophotometry, facilitated by the formation of a stable red complex.

NHC-based Palladium Catalysts

In collaboration with Umicore AG and Co.,1 we are pleased to offer a series of robust Pd(II) and Pd(0) complexes employed as the linchpin in C–C bond forming reactions.

Louie Group – Professor Product Portal

Professor Louie's research focuses on the discovery and mechanistic understanding of new reactions catalyzed by transition metal complexes. She has developed a highly active Ni(0) catalyst that effectively mediates a variety of cycloaddition and isomerization reactions.

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.

Dopamine, Norepinephrine and Ephinephrine Synthesis

Dopamine-β-hydroxylase is located inside amine storage vesicles of norepinephrine neurons. Dopamine is actively transported from the cytoplasm into the vesicles. As the enzyme is a copper containing protein, its activity can be inhibited by copper chelating agents, such as diethyldithiocarbamate

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