Pyranine is an organic sodium salt that functions as a fluorochrome. It is derived from a pyrene hydride and is primarily used as a fluorescent dye and pH indicator.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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C.I. Direct Orange 108
Direct dye for textiles
Benzidine yellow
Pigment for printing inks and plastics
Disodium 2-(11-oxido-3-oxo-3H-dibenzo(c,h)xanthen-7-yl)benzoate
disodium salt of xanthene dye
Acid yellow 34
acid dye for textile coloring
2,7-Dibromopyrene
research compound
Pyrene
polycyclic aromatic hydrocarbon intermediate
1-aminopyrene
research compound
1-Pyrenylboronic acid
research compound
The international HS code for Pyranine (CAS 6358-69-6) is 3204.19.
3204.19
3204 19 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
trisodium;8-hydroxypyrene-1,3,6-trisulfonate
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C1=CC2=C3C(=C(C=C2S(=O)(=O)[O-])S(=O)(=O)[O-])C=CC4=C(C=C(C1=C43)O)S(=O)(=O)[O-].[Na+].[Na+].[Na+]
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