Video Experimental Relacionado

Updated: Jul 13, 2026

Real-time Monitoring of Reactions Performed Using Continuous-flow Processing: The Preparation of 3-Acetylcoumarin as an Example
09:56

Real-time Monitoring of Reactions Performed Using Continuous-flow Processing: The Preparation of 3-Acetylcoumarin as an Example

Published on: November 18, 2015

Las reacciones adversas a cromolynyn

G A Settipane, D E Klein, G K Boyd

    JAMA
    |February 23, 1979
    PubMed
    Resumen

    Las reacciones adversas al cromolyn sodio en pacientes con asma ocurrieron en el 2% de los casos y fueron reversibles. Estas reacciones no fueron mediadas inmunológicamente, lo que sugiere que el cromolyn sodio es un tratamiento seguro para el asma.

    Más Videos Relacionados

    Optimized Griess Reaction for UV-Vis and Naked-eye Determination of Anti-malarial Primaquine08:31

    Optimized Griess Reaction for UV-Vis and Naked-eye Determination of Anti-malarial Primaquine

    Published on: October 11, 2019

    A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance07:19

    A Modified Lean and Release Technique to Emphasize Response Inhibition and Action Selection in Reactive Balance

    Published on: March 19, 2020

    Videos de Conceptos Relacionados

    Reaction Quotient02:35

    Reaction Quotient

    The status of a reversible reaction is conveniently assessed by evaluating its reaction quotient (Q). For a reversible reaction described by m A + n B ⇌ x C + y D, the reaction quotient is derived directly from the stoichiometry of the balanced equation as
    Reactivity of Enols01:18

    Reactivity of Enols

    Enols are a class of compounds where a hydroxyl group is attached to a carbon–carbon double bond, which implies that it is a vinyl alcohol. A carbonyl compound with an α hydrogen undergoes keto–enol tautomerism and remains in equilibrium with its tautomer, the enol form. Usually, the keto tautomer is present in a higher concentration than the enol tautomer due to the higher bond energy of C=O compared to C=C. Moreover, the direction of the keto–enol equilibrium is governed by factors like...
    Radical Reactivity: Electrophilic Radicals01:02

    Radical Reactivity: Electrophilic Radicals

    Radicals adjacent to electron‐withdrawing groups are called electrophilic radicals. These radicals readily react with nucleophilic alkenes. For example, the malonate radical, in which the radical center is flanked by two electron‐withdrawing groups, reacts readily with butyl vinyl ether, which consists of an electron‐donating oxygen substituent. The reaction between electrophilic malonate radical and nucleophilic vinyl ether is favored because the radical has a low‐energy SOMO, which interacts...
    Toxic Reactions: Overview01:26

    Toxic Reactions: Overview

    When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
    Toxicity falls into two primary categories: local and systemic.
    Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
    In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
    Reactions at Equilibrium and the Equilibrium Constant01:24

    Reactions at Equilibrium and the Equilibrium Constant

    Reactions at equilibrium are characterized by equal rates of forward and reverse reactions. This state of equilibrium does not mean that the reactions have stopped, but rather that they are occurring at identical rates. As a result, the concentrations of reactants and products remain constant over time.The equilibrium constant, denoted as 'K', is a key factor in understanding this state of equilibrium. 'K' is the ratio of the rate constant of the forward reaction to the rate constant of the...
    Chain Reactions01:29

    Chain Reactions

    Chain reactions involve highly reactive transient species, such as atoms or free radicals, as intermediates. These intermediates facilitate rapid reactions over an extended period. The process includes a series of steps: a reactive intermediate is consumed, reactants are converted to products, and the intermediate is regenerated. This cycle enables continuous repetition, amplifying the production of products with a small amount of intermediate. Chain reactions often utilize free radicals as...