Chelators

DTPA

Diethylenetriaminepentaaceticacid["aceticacid"]
C₁₄H₂₃N₃O₁₀ (MG: 393.35)

EDDHA, also EHPG

Ethylenediaminedi(o-hydroxyphenylaceticacid) ["aceticacid"] or
N,N'-ethylenebis-2-(o-hydroxyphenyl)glycine
C₁₈H₂₀N₂O₆ (MG: 360.36)

EDTA

Ethylenediaminetetraaceticacid["aceticacid"]
C₁₀H₁₆N₂O₈ (MG: 292.25)

HEEDTA

N-Hydroxyethylethylenediaminetriacetic acid ["aceticacid"]
C₁₀H₁₈N₂O₇ (MG: 278.26)

NTA

Nitrilotriaceticacid["aceticacid"]
Tris(carboxymethyl)amine
N,N-bis(carboxymethyl)glycine
C₆H₉NO₆ (MG: 191.14)