Table 3.

Solubility, coating and thermal stability of selected lipophilic neurotracing dyes.

Dye	Solubility in DMF(mM)	Coating quality	Physical stability of dye coating	Thermal stability in 4% neutral-buffered formaldehyde at 37°C
Red/Far Red dyes
NV Red	>150	Uniform	Stable to shipping	<5% loss@21 days
NV Maroon	>150	Uniform	Stable to shipping	∼25% loss@21 days
Green dyes
DiA	∼50	Uniform	Stable to shipping	∼20% loss@21 days at 62°C
DiO	∼15	Uneven	Flakes off when handled	∼15% loss@21 days
NV Emerald	>140	Uniform	Stable to shipping	>50% loss@1 day
PTIR326	>100	Uniform	Stable to shipping	∼50% loss@2.5 days
PTIR327	>100	Uniform	Stable to shipping	<10% loss@23 days
NV Jade	>100	Uniform	Stable to shipping	∼50% loss@5.5 days