Because thousands of natural products exist, they are categorized into several systems for easier study:
: Increasingly important for novel compounds like Cytarabine (from sea sponges) and Carrageenan (from seaweed). 3. Classification of Crude Drugs pharmacognosy lecture notes ppt
The term was first coined in 1815 by C.A. Seydler in his work Analecta Pharmacognostica . It is derived from two Greek words: Pharmakon : Drug Gnosis : Knowledge (or Gignosco : to acquire knowledge) Because thousands of natural products exist, they are
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