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You are here:Home » Molecular Biology » MB-Enzymes, Substrates » Luciferin D-, Firefly, Potassium Salt (4,5-Dihydro-2-(6-hydroxy-2-benzothiazolyl)-4-thiazolecarboxylic acid Potassium, D-Luciferin)

Luciferin D-, Firefly, Potassium Salt
(4,5-Dihydro-2-(6-hydroxy-2-benzothiazolyl)-4-thiazolecarboxylic acid Potassium,


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Luciferin is the substrate for luciferase and is used in highly sensitive bioluminescence assays for the detection of ATP; the generation of light is directly proportional to the concentration of ATP. Also used in detection of the luciferase marker gene.
Catalog #L6007
SolubilityMethanol, acetone, ethyl acetate, DMF. Slightly soluble in water.
UV Absorpbance E385±0.2nm (0.5M Na2CO3, pH 11.5) 17,500
Specific Gravity (H20 = 1.0)1.425
Water Content (KF) 9%
ImpuritiesAs reported
Melting Point>200°C (>391°F)
Boiling Point>300°C (>571°F)
Storage and StabilityStore lyophilized powder at -20°C, dessicated and protected from light . Reconstitute with ddH2O and bring solution to a pH of 6.0-6.3. Reconstituted product can be stored protected from light at °4C for up to 2 weeks. or at -20°C for several months. For maximum recovery of product, centrifuge the original vial prior to removing the cap.
Note At a pH greater than 6.3, D-Luciferin may undergo a slow racemization from the D- to the L- isomer.
CAS Number115144-35-9
Molecular FormulaC11H7N2O3S2K
Molecular Weight318.42
Purity~99% (Chiral)
FormSupplied as a pale yellow to yellow, crystalline powder
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Alternate names4,5-Dihydro-2-(6-hydroxy-2-benzothiazolyl)-4-thiazolecarboxylic acid potassium salt; D-Luciferin, potassium

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