Pyronin G, ultrapure

Synonyms: Pyronine Y3,6-Bis(dimethylamino)xanthylium chloridePyronin Y
Pyronin G, ultrapure
Pyronine G
Used in Unna-Pappenheim stain to demonstrate RNA (red) in contrast to DNA (green). Also used for bacteria staining.

  • Color Index: 45005

Formula: C₁₇H₁₉ClN₂O
MW: 302.8 g/mol
Melting Pt: 250…260 °C
Storage Temperature: Ambient
MDL Number: MFCD00011725
CAS Number: 92-32-0
EINECS: 202-147-8
Merck Index: 12,08190
Specification Test Results
Lambda max (0.1g/500mL then 1:100, Water) 543 - 553 nm