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Chelators

DTPA

dtpa

Diethylenetriaminepentaacetic acid
C14H23N3O10(MG: 393.35)

EDDHA, also EHPG

eddha

Ethylenediaminedi(o-hydroxyphenylacetic acid) or
N,N'-ethylenebis-2-(o-hydroxyphenyl) glycine
C18H20N2O6 (MG: 360,36)

EDTA

edta

Ethylenediaminetetraacetic acid
C10H16N2O8 (MG: 292.25)

HEEDTA

heedta

N-Hydroxyethylethylenediaminetetraacetic acid
C10H18N2O7 (MG: 278.26)

NTA

nta

Nitrilotriacetic acid
Tris(carboxymethyl)amine
N,N-bis(carboxymethyl)glycine
C6H9NO6 (MG: 191.14)