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Diethylaminosulfur trifluoride (DAST) is the organosulfur compound with the formula Et 2 NSF 3. This liquid is a fluorinating reagent used for the synthesis of organofluorine compounds . [ 1 ] The compound is colourless; older samples assume an orange colour.
The mechanism of fluorination by DAST parallels that of sulfur tetrafluoride. Attack of the hydroxyl group of the substrate on sulfur and elimination of hydrogen fluoride lead to an alkoxyaminosulfur difluoride intermediate. Nucleophilic attack by fluoride, either by an S N 1 [5] or S N 2 [6] pathway, leads to the product. Although clean ...
Drug education is the planned provision of information, guidelines, resources, and skills relevant to living in a world where psychoactive substances are widely available and commonly used for a variety of both medical and non-medical purposes, some of which may lead to harms such as overdose, injury, infectious disease (such as HIV or hepatitis C), or addiction.
Prescription drug addiction is the chronic, repeated use of a prescription drug in ways other than prescribed for, including using someone else’s prescription. [ 3 ] [ 4 ] A prescription drug is a pharmaceutical drug that may not be dispensed without a legal medical prescription .
addictive drug – psychoactive substances that with repeated use are associated with significantly higher rates of substance use disorders, due in large part to the drug's effect on brain reward systems; dependence – an adaptive state associated with a withdrawal syndrome upon cessation of repeated exposure to a stimulus (e.g., drug intake)
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Joshua Lee Hunsucker has been accused of poisoning his then-10-year-old daughter with the same eye drops substance he allegedly used to kill his late wife, court documents obtained by PEOPLE stated.
They flung curse words back and forth that Thursday morning in March, lurching through the hallway of Knightdale High School, slamming into a row of lockers and tripping over a trashcan. A video shot by another student shows a teacher breaking up the fight after a few seconds, and both teens ending up on the ground, hurt only in pride.