Marquis reagent — Sildenafil
No reaction
Sildenafil (Viagra)
Source text (English): no color change
Sildenafil reagent analysis
There are more substances than colors, so to increase analysis precision use a kit with multiple reagents. Exact color of a reaction depends on adulteration, quantity, lighting, temperature, exposure to air, storage, as well as reagent quality and degradation. Positive or negative result does not indicate if a substance is safe. No substance is 100% safe.
Sildenafil
sildenafil · Sildenafil (Viagra) · Viagra
Mecke reagent — Sildenafil
White · Brown
Sildenafil (Viagra)
Source text (English): faint brown
Mandelin reagent — Sildenafil
No reaction
Sildenafil (Viagra)
Source text (English): faint brown
Simon's reagent — Sildenafil
No reaction
Sildenafil (Viagra)
Source text (English): no blue color change
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.