Which color change is an early sign of a drug decomposition process?

Which color change is an early sign of a drug decomposition process?

• A. Pink
• B. Brown
• C. Green
• D. Yellow

Answer: (A)

Color changes signal chemical changes in a drug as it degrades. Early on, trace amounts of degradation products can alter how light is absorbed enough to give a pink tint. This faint pink indicates the substance is just starting to break down, before more visible changes appear. As decomposition continues, the color often deepens or shifts toward brown, yellow, or green, reflecting more extensive chemical change. So pink is the best marker for an early sign because it tends to appear with the initial formation of degradation products and before heavier discoloration develops. In practice, pink serves as a qualitative cue that warrants further analytical confirmation to assess stability and shelf life.

Color changes signal chemical changes in a drug as it degrades. Early on, trace amounts of degradation products can alter how light is absorbed enough to give a pink tint. This faint pink indicates the substance is just starting to break down, before more visible changes appear. As decomposition continues, the color often deepens or shifts toward brown, yellow, or green, reflecting more extensive chemical change. So pink is the best marker for an early sign because it tends to appear with the initial formation of degradation products and before heavier discoloration develops. In practice, pink serves as a qualitative cue that warrants further analytical confirmation to assess stability and shelf life.