The molecule is a tripeptide consisting of AcTyrGlyGly with a (4-arsonophenyl)diazenyl group at the 3-position on the tyrosine phenyl ring. It is a monoazo compound, a tripeptide and an organoarsenic compound.
2-[[2-[[(2S)-2-acetamido-3-[3-[(4-arsonophenyl)diazenyl]-4-hydroxyphenyl]propanoyl]amino]acetyl]amino]acetic acid