- Biochemical Assay Reagents
- Chelators
Chelators

Chelators refer to a class of compounds capable of forming complexes with metal ions. They contain two or more ligands that react with metal ions to form stable chelates. Typically, chelators possess multiple functional groups, such as quaternary ammonium and amino groups, which can encapsulate metal ions within the molecule. This encapsulation reduces the catalytic performance of metal ions, thereby mitigating their influence on reactions.
Chelators are widely used in the fields of pharmaceutical preparations, cosmetics and food to regulate pH values and enhance stability.
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Chelators (148)
- Formula: C20H37N3O6
- Molecular Weight: 415.52
NOTA-bis (tBu) ester is a derivative of NOTA (HY-134418). NOTA-bis (tBu) ester is radiolabeled with 68Ga to form ZD2-(68Ga-NOTA) after conjugation with ZD2. ZD2-(68Ga-NOTA) can be used for PET imaging studies of pancreatic cancer.
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- Formula: C27H38N6O9S
- Molecular Weight: 622.69
p-NCS-Bz-DOTA-GA is a bifunctional chelator. p-NCS-Bz-DOTA-GA can be used as a versatile linker in targeted molecular imaging for both PET/SPECT and MRI applications.
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- Formula: C24H33N5O8S
- Molecular Weight: 551.61
(S)-p-SCN-Bn-DOTA is a bifunctional chelator (BFC), a macrocyclic DOTA derivative for tumor pretargeting. (S)-p-SCN-Bn-DOTA can be used for the conjugation of peptides and radionuclides, such as as a linker for In-111 labeled radioimmunoconjugates (RICs) for single photon emission tomography (SPECT) and in vitro biodistribution studies.
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- Formula: C24H20BNa
- Molecular Weight: 342.22
Kalibor (Sodium tetraphenylborate; Tetraphenylboron sodium) is a boron-based salt and antibacterial agent. Kalibor exerts activity against Neisseria meningitidis and Neisseria gonorrhoeae. Kalibor facilitates boron uptake by Neisseria meningitidis cells. Kalibor reduces bacterial burden in a mouse model of Neisseria meningitidis bacteremia. Kalibor can be used for the research of bacterial infection, such as meningococcal bacteremia.
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- Formula: C10H12CaN2Na2O8
- Molecular Weight: 374.27
EDTA Calcium disodium, 98% (EDTA calcium disodium salt, 98%; Adsorbonac, 98%) is a chelating agent for calcium and other metal ions, preventing them from participating in chemical reactions. It can effectively remove metal ions from solutions, preventing them from interfering with experimental processes.
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- Formula: C19H34N8O7
- Molecular Weight: 486.52
Azido-mono-amide-DOTAis a bifunctional chelator (Bifunctional Chelator; BFC) and a macrocyclic DOTA derivative used for tumor pre-targeting. Azido-mono-amide-DOTA can be used for conjugation of peptides and radionuclides.
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- Formula: C20H40N4O4
- Molecular Weight: 400.56
DO2A-tert-butyl ester is a bifunctional chelating agent. DO2A-tert-butyl ester can be used in the development of radionuclide imaging tracers.
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- Formula: C36H43F3N6O10
- Molecular Weight: 776.76
DOTA-ADIBO TFA is a DOTA-derived bifunctional chelator (BFC) that allows drug conjugation via an uncatalyzed, copper-free cycloaddition reaction. DOTA-ADIBO TFA enables the construction of fusion chelator systems that can be further used to synthesize radiotracers after Cu[64] modification. Positron emission tomography imaging of tumors expressing integrin αvβ6.
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- Formula: C30H55N3O10
- Molecular Weight: 617.77
DTPA-tetra (t-Bu ester)is a bifunctional chelator (Bifunctional Chelator; BFC) and a macrocyclic DPTA derivative used for tumor pre-targeting. DTPA-tetra (t-Bu ester) can be used for conjugation of peptides and radionuclides.
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- Formula: C18H33N5O7S
- Molecular Weight: 463.55
DOTA-Thiolis a bifunctional chelator (Bifunctional Chelator; BFC) and a macrocyclic DOTA derivative used for tumor pre-targeting. DOTA-Thiol can be used for conjugation of peptides and radionuclides.
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- Formula: K2C2O4·H2O
- Molecular Weight: 184.23
Potassium oxalate monohydrate is a biochemical reagent that can be used as a biological material or organic compound for life science related research.
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- Formula: C27H48N6O9
- Molecular Weight: 600.70
Nocardamine (Desferrioxamine E; Nocardamin) is a cyclic trihydroxamate siderophore with iron ion chelation, antioxidant, antibacterial and other activities. Nocardamine is synthesized by Pseudomonas stutzeri under iron-deficient conditions, and excessive iron ions significantly inhibit its biosynthesis process. Nocardamine increases the level of phosphorylated ERK protein, promotes nuclear translocation of β-catenin, and restores the downregulated expression of SIRT1 protein. Nocardamine alleviates cellular oxidative stress, reduces ROS content, and simultaneously repairs the ability to form mineralized nodules and the expression of osteogenic markers. Nocardamine induces FoxA gene transcription and protein expression to assist Pseudomonas aeruginosa in iron ion uptake; it also selectively inhibits the proliferation of mycobacteria. Nocardamine induces spindle-shaped morphological changes in BM-N4 insect cells, and sufficient iron ions inhibit this cellular morphological change. Nocardamine is suitable for research related to bacterial infections.
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- Formula: C6H20N2O12P4
- Molecular Weight: 436.12
Ethylenediaminetetramethylenephosphonic acid (EDTMP) is a bone-targeted chelating agent. Ethylenediaminetetramethylenephosphonic acid sodium‘s phosphonic acid groups possess a unique ability to bind with high affinity to hydroxyapatite in bone, and can form radioactive compounds with 153Sm and 177Lu. Ethylenediaminetetramethylenephosphonic acid is used to study palliative therapy for pain associated with multiple bone metastatic cancers.
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- Formula: C23H35N5O8
- Molecular Weight: 509.55
p-NH2-Bn-DOTAis a bifunctional chelator (Bifunctional Chelator; BFC) and a macrocyclic DOTA derivative used for tumor pre-targeting. p-NH2-Bn-DOTA can be used for conjugation of peptides and radionuclides.
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- Formula: C18H30N4O12
- Molecular Weight: 494.45
TTHA is an aminopolycarboxylic acid chelating agent with preferential affinity for lighter (lower atomic number) rare earth element (REE) ions. TTHA binds to REE ions through chelation as the primary coordination mechanism.
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- Formula: C10H12CaN2O8.2H2.2Na
- Molecular Weight: 410.30
CaⅡ-EDTA disodium dihydrate (Calcium disodium EDTA dihydrate) is an orally active metal chelating reagent, exhibits bactericidal activities against periodontal pathogens Aggregatibacter actinomycetemcomitans, Prevotella intermedia and Porphyromonas gingivalis. CaⅡ-EDTA disodium dihydrate is effective chelating antidotes for lead- and cadmium poisoning.
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- Formula: C20H24O6
- Molecular Weight: 360.40
Dibenzo-18-crown-6 is a biochemical reagent that can be used as a biological material or organic compound for life science related research.
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- Formula: C10H13N2Na3O8 · xH2O
- Molecular Weight: 376.20
EDTA (Ethylenediaminetetraacetic acid) hydrate sodium is a kind of metal chelating agent (binds to bivalent and trivalent metal cations, including calcium). EDTA hydrate sodium has antibacterial, anti-inflammatory, antioxidant, anti-hypercalcemia and anticoagulant activities. EDTA hydrate sodium decreases the metal ion-catalyzed oxidative damage to proteins, and allows maintenance of reducing environment during protein purification. EDTA hydrate sodium can alleviate the liver fibrosis. Ethylenediaminetetraacetic acid can be used for coronary artery disease and neural system disease research.
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- Formula: C16H31N7O5
- Molecular Weight: 401.46
DOTAM-mono-acid is a chelator with DOTAM as its core. DOTAM-mono-acid contains a carboxylic acid group that can be activated to form an amide bond with the N-terminus of a peptide. DOTAM-mono-acid can form peptide conjugates for radiometal labeling.
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