Ethidium bromide 3D structure

Ethidium bromide (also called Ethidium, homidium) has the formula C21H20N3+ and a molar mass of 314.4 g/mol. The model above is PubChem's computed 3D conformer: drag to rotate, scroll to zoom, and use the measurement tools to read bond lengths and angles.

Formula
C21H20N3+
Molar mass
314.4 g/mol
PubChem CID
3624
Heavy atoms
24
Category
Dyes and pigments

Explore in 3D Space-filling model PubChem

Identifiers

IUPAC name5-ethyl-6-phenylphenanthridin-5-ium-3,8-diamine
SMILESCC[N+]1=C2C=C(C=CC2=C3C=CC(=CC3=C1C4=CC=CC=C4)N)N
PubChem CID3624
Other namesEthidium, homidium, Ethidium cation, Babidium, Homidium cation

How to read the 3D model

Atoms use the standard CPK colors: carbon gray, hydrogen white, oxygen red, nitrogen blue, sulfur yellow. Switch to Spacefill to see the molecule's overall shape and size, or Stick for a clear view of the bonds. Click two atoms in distance mode to measure a bond length in ångströms.

3D coordinates are PubChem's computed conformer, one low-energy shape of the molecule. Flexible molecules can take many other shapes.

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