Racemic dating


29-Jul-2019 11:10

Applies to epinephrine: injection solution Along with its needed effects, epinephrine may cause some unwanted effects.

Although not all of these side effects may occur, if they do occur they may need medical attention.

Unfortunately, the synthesis of the drug produced a racemate, as would be expected, and the wrong enantiomer was not removed before the drug was marketed. We resolved it by reacting it with a homochiral acid from a plant source, forming diastereomers that could be resolved by fractional crystallisation.

When the resultant homochiral crystals were dissolved, and activated charcoal (a catalyst) added, the substance quickly racemized, because a catalyst accelerates approach to equilibrium.

All amino acids in proteins are ‘left-handed’, while all sugars in DNA and RNA, and in the metabolic pathways, are ‘right-handed’.

A 50/50 mixture of left- and right-handed forms is called a racemate or racemic mixture.

However, while the left-handed form is a powerful tranquilliser, the right handed form can disrupt fetal development, resulting in severe birth defects.These reactions have typically presented with lid edema and a thick yellow discharge. Auvi-Q (EPINEPHrine)." sanofi-aventis, Bridgewater, NJ.



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