alcohol ____ SAA may be used like Tween 80 (polysorbate 80)

Solution of SAA dissolve larger amounts of water _____ material

Dilution method The pH ____ than the official

Aromatic waters are ____ stable preparations.

Separation of volatile material when the temperature _____ causing cloudiness

Salting out of volatile substance upon addition of water solution of _______ and may collect on surface of the liquid imparting a burning taste to the first dose.

Loss in flavor may be observed if aromatic waters are used in the _____ phase of dispersions

Oxidative degradation involving dissolved atmospheric oxygen with the aroma bearing solutes which may be catalyzed by light and trace metals like iron and copper

is stored in light resistant bottles, since light catalyzes the oxidation to the poisonous gas phosgene.

Is the science, which deals with the discovery and design of new and better therapeutic chemicals and development of these chemicals into new medicines and drugs.

Generally medicinal chemists can:

Pure organic compounds are the main source of agents for the cure and the prevention of disease.

: materials obtained from both plant and animal, e.g. vitamins, hormones, amino acids, antibiotics,
alkaloids, glycosides.... etc.).

Synthesis compounds: either pure synthesis or synthesis naturally
occurring compounds (e.g. morphine, atropine, steroids and cocaine) to reduce their cost.

Semi-synthesis compounds: Some compounds either can be purely synthesized or can be isolated from natural sources in low cost.

Therefore, the natural intermediate of such drugs could be used for the synthesis of a desired product (e.g. semi synthetic penicillins).