Technical Data
Luciferin D-, Firefly, Potassium Salt (4,5-Dihydro-2-(6-hydroxy-2-benzothiazolyl)-4-thiazolecarboxylic acid Potassium, D-Luciferin)
Molecular Biology Storage: -20°CShipping: Blue Ice
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.

Methanol, acetone, ethyl acetate, DMF. Slightly soluble in water.

UV Absorpbance
E385±0.2nm (0.5M Na2CO3, pH 11.5):

Specific Gravity (H20 = 1.0):

Water Content (KF):

As reported

Melting Point:
>200°C (>391°F)

Boiling Point:
>300°C (>571°F)

Storage and Stability:
Store 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 Number:

Molecular Formula:

Molecular Weight:
Source: Firefly
Purity: ~99% (Chiral)
Form: Supplied as a pale yellow to yellow, crystalline powder

Important Note: This 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.
US Biological application reference: 1. Belleannée, C. et al., (2012) PLoS ONE 7(4): e34996. doi:10.1371/journal.pone.0034996. 2. Rodriguez, D.A. et al., (2009) Mol. Biol. Cell 20:2297-2310.

Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.