KVV E-Modules - Partition Coefficient And Lipophilicity, Lipophilicity In Drug Design, Modern Analytical Tools For Log P And Log D Determination And Their Role in ADME Optimization

Quadrant -I (Video)

Partition Coefficient And Lipophilicity, Lipophilicity In Drug Design, Modern Analytical Tools For Log P And Log D Determination And Their Role in ADME Optimization

Quadrant - II (Study Material)

1. Partition Coefficient And Lipophilicity, Lipophilicity In Drug Design, Modern Analytical Tools For Log P And Log D Determination And Their Role in ADME Optimization

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Quadrant - III (Assignments)

1. Partition Coefficient And Lipophilicity, Lipophilicity In Drug Design, Modern Analytical Tools For Log P And Log D Determination And Their Role in ADME Optimization

1. Define lipophilicity and explain its role in drug discovery and development. Discuss how lipophilicity affects absorption, distribution, metabolism, and excretion (ADME) of drugs. 2. Explain Partition Coefficient (log P) and Distribution Coefficient (log D). Discuss their importance in predicting membrane permeability and drug transport across biological membranes.

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Quadrant - IV (MCQs)

1. The partition coefficient (log P) is defined as the ratio of the concentration of a drug in:

A: A) Blood and plasma B: B) Lipid phase and aqueous phase C: C) Plasma and urine D: D) Acid and base solution

2. In the determination of log P, the most commonly used biphasic system is:

A: A) Ethanol – Water B: B) Hexane – Water C: C) n-Octanol – Water D: D) Methanol – Water

3. Lipophilicity of a drug mainly refers to its:

A: A) Affinity for aqueous environments B: B) Ability to dissolve in lipid environments C: C) Molecular weight D: D) Degree of ionization

4. The partition coefficient (log P) is applicable only to:

A: A) Ionized drug molecules B: B) Unionized drug molecules C: C) Both ionized and unionized molecules D: D) Protein-bound drugs

Which parameter represents the distribution of both ionized and unionized forms of a drug at a specific pH?

A: A) log P B: B) log S C: C) log D D: D) pKa

6. A drug with very low lipophilicity is likely to show:

A: A) High tissue accumulation B: B) Poor membrane permeability C: C) High toxicity D: D) Extensive metabolism

7. The classical and reference method used for determination of partition coefficient is:

A: A) Capillary electrophoresis B: B) Potentiometric titration C: C) Shake-flask method D: D) Gas chromatography

8. In Reverse Phase HPLC, highly lipophilic compounds generally show:

A: A) Shorter retention time B: B) Longer retention time C: C) No retention D: D) Immediate elution

9.Capillary electrophoresis separates molecules based on their:

A: A) Molecular weight only B: B) Solubility in water C: C) Charge-to-size ratio D: D) Boiling point

Which of the following computational tools is commonly used for predicting log P and log D values?

A: A) SPSS B: B) SwissADME C: C) Excel D: D) MATLAB

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