B Pharmacy is a 4-year undergraduate program in India that provides comprehensive knowledge of drugs, healthcare, and pharmaceutical sciences. It prepares students for careers in the pharmaceutical industry, clinical research, and healthcare services.
This course builds a strong foundation for B Pharmacy Students all over the world.
Flocculated Suspensions are agents (like electrolytes, polymers) are used. Flocculated Suspensions Particles form loosely bound clusters called flocs. Flocs are light and settle rapidly but form a loose sediment that is easily redispersed. Zeta potential is reduced (but not too low) to promote controlled aggregation. Advantages: No caking Easy redispersion Uniform dose upon shaking Disadvantages: … Read more
Settling in Suspensions affects stability, dosage uniformity, and quality of pharmaceutical formulations. Settling In Suspensions is a natural consequence in suspensions due to gravity acting on particles denser than the liquid. Stokes’ Law The rate of settling V of spherical particles in a fluid is described by: $V = \frac{2 r^{2} (\rho_{p} – \rho_{f}) g}{9 … Read more
Rotational Viscometer (Brookfield Viscometer) measures fluid viscosity by spindle rotation resistance. It is widely used in pharma, food, and cosmetic industries. Principle of Rotational Viscometer (Brookfield Viscometer): Measures the torque required to rotate a spindle at constant speed in the sample. The resistance to rotation is a function of the sample’s viscosity. $\eta \propto \frac{\text{Torque}}{\text{Angular … Read more
Optical Properties of Colloids help in particle size analysis and stability studies of colloidal systems. Optical Properties of Colloids explain light scattering, Tyndall effect, and visibility of dispersed particles. Colloidal particles, due to their size (1–1000 nm), interact with light in unique ways. These optical effects help characterize and analyze colloidal systems. Tyndall Effect Definition: … Read more
Claisen-Schmidt Condensation forms α,β-unsaturated carbonyl compounds by reacting aromatic aldehydes with ketones in base. The Claisen–Schmidt condensation is a base-catalyzed aldol condensation between an aromatic aldehyde and a ketone (or sometimes another aldehyde) with α-hydrogens, typically resulting in an α,β-unsaturated carbonyl compound. General Reaction: Aromatic aldehyde + Aliphatic ketone —(Base/heat) → α,β-unsaturated ketone + H₂O … Read more
Schmidt Rearrangement converts carboxylic acids, ketones, or aldehydes into amines and amides using hydrazoic acid. The Schmidt rearrangement is a chemical reaction involving the reaction of hydrazoic acid (HN₃) with carbonyl compounds (like carboxylic acids, ketones, or aldehydes) in the presence of acid to yield amines, amides, or nitriles, depending on the substrate. Overview of … Read more
Beckmann Rearrangement converts oximes into amides or lactams under acidic conditions, important in drug and polymer synthesis. Overview of Beckmann Rearrangement: The Beckmann rearrangement converts oximes into amides via acid-catalyzed rearrangement. Generally used for converting ketoximes into N-substituted amides. If starting from aldoximes, the product is a primary amide. General Reaction: R1–C=NOH–R2 → R1–CONH–R2 (in … Read more
Dakin Reaction converts ortho- and para-hydroxy aromatic aldehydes or ketones to dihydroxybenzenes using hydrogen peroxide. Overview of Dakin Reaction: The Dakin reaction involves the oxidation of aryl aldehydes or aryl ketones, especially those with electron-donating groups (–OH or –OR) in the ortho or para position, to phenols using hydrogen peroxide in basic medium. Reagents: Hydrogen … Read more
Metal Hydride Reduction with NaBH₄ and LiAlH₄ converts carbonyls to alcohols, widely used in organic and medicinal chemistry. Overview: Metal hydrides like sodium borohydride (NaBH₄) and lithium aluminium hydride (LiAlH₄) are used to reduce carbonyl compounds (aldehydes, ketones, esters, carboxylic acids, etc.) to alcohols. Sodium Borohydride (NaBH₄) Structure: Na⁺[BH₄]⁻ (a tetrahedral borohydride ion) Solubility & … Read more
This article explains about Oppenauer Oxidation oxidizes secondary alcohols to ketones using aluminium alkoxide and ketone acceptors. Overview of Oppenauer Oxidation: Oppenauer oxidation is a mild, selective oxidation method used to convert secondary alcohols into ketones (and sometimes primary alcohols into aldehydes) under non-aqueous, basic conditions. Reagents: Aluminum isopropoxide (Al(O-iPr)₃) – catalyst Excess ketone (commonly … Read more
