Radiometric detection is considered the gold standard for many applications, from drug discovery and development to plant sciences. The technique achieves sub-femtogram sensitivity levels, and quantitates the binding and activity of radiolabeled compounds with high specificity and sensitivity. As the leading supplier of research radiochemicals, we offer a broad portfolio of products for any radiochemistry need.
Our radiochemical analysis products include:
Radionuclides such as 124I, 14C, 89Zr, 90Y, 125I, 131I, 22Na, 32P, 35S, 3H, 45Ca, 51Cr, 54Mn, 55Fe, 59Fe, 85Sr
EasyTag™ protein labeling mixes
EasyTide radiolabeled nucleotides
NEN radiolabeled compounds
SPA Enzymatic assays and imaging beads
Our radiolabeled compounds are useful in a wide range of applications:
Research in cancer, CNS and neurologic disease, cardiovascular and metabolic disease, inflammation, and other disorders
Kinetic and mechanistic studies
Radiometric cAMP assays
Detection of binding to over 80 different receptor types
Our radiometric reagents are not reliant on the use of antibodies for detection and read-out – just one of the reasons they are so widely used.
Dihydroxyphenylethylamine (dopamine, DA), tritiated at the 7 position. Dihydroxyphenylethylamine is a neurotransmitter and is the primary endogenous ligand for dopamine receptors. This product has a scheduled lot release for the second Monday in April and October.
α-bungarotoxin, labeled with 125I on tyrosine residue 54. α-bungarotoxin is a snake venom neurotoxin that acts as an antagonist at nicotinic acetylcholine receptors (nAChRs). This product as offered at two specific activities. Specific activity indicates how much radioactivity there is per molecule of ligand. Several of our 125I-labeled ligands are offered at maximum specific activity (2200 Ci/mmol if one 125I labeling site is available). This indicates that virtually every molecule of ligand provided in the stock vial is radiolabeled.
2-Deoxy-D-glucose, nominally labeled with tritium at C1/C2. This product is supplied in 90% ethanol. Deoxy-D-glucose (DOG) is a glucose analog that is readily transported into most cells, is phosphorylated and trapped by the cells (unidirectional transport), and cannot be further metabolized. It is the most-common chemical used in glucose uptake assays.
Insulin (porcine), labeled with 125I. Insulin is a peptide hormone that binds to insulin receptors to increase cellular uptake of glucose, increase DNA replication and protein synthesis, and modify enzymatic activity. This product is radioiodinated with 125I using a modification of the Hunter and Greenwood method and purified by ion-exchange column chromatography. This method predominantly labels tyrosine residues.