Marquis reagent — 2-Methoxyamphetamine
White · Red
2-MeOA
Source text (English): red
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.
2-methoxyamphetamine · 2-MeOA

White · Red
2-MeOA
Source text (English): red
White · Green
2-MeOA
Source text (English): green
Yellow · Brown
2-MeOA
Source text (English): brown
White · Brown
2-MeOA
Source text (English): dark brown
White · Green · Brown
2-MeOA
Source text (English): green > brown
No reaction
2-MeOA
Source text (English): no color change
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.