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D-Luciferin potassium (D-Luciferin K Salt) is a popular bioluminescent substrate of luciferase in the presence of ATP.

D-Luciferin Sodium is a heterocyclic light-emitting compound and natural ligand for luciferase used to detect cell activity. The salt form of luciferin dissolves in water or other typical buffers.

5-Bromo-4-chloro-3-indoxyl-beta-D-cellobioside is a chromogenic compound used to detect cellobiohydrolases.

CH3OCO-D-CHA-Gly-Arg-pNA acetate serves as a chromogenic substrate for Factor Xa, as documented in sources [1] [2].

3-Methyl-8-(2'-deoxy-β-D-ribofuranosyl)isoxanthopterin serves as a pteridine-based fluorescent guanosine analogue and DNA uptake tracer utilized extensively for investigation into DNA binding and dynamics. It exhibits an absorbance peak at 350 nm and a corresponding emission peak at 430 nm [1].

4-Methylumbelliferyl 2-sulfamino-2-deoxy-α-D-Glucopyranoside (4-MU-α-GlcNS) is a fluorogenic substrate of heparin sulphamidase. Heparin sulphamidase cleaves 4-MU-α-GlcNS to yield 4-MU-α-GlcNH2, which is then cleaved by α-glucosaminidase to release the fluorescent product 4-MU, which displays an emission maxima of 445-454 nm. The excitation maxima for 4-MU is pH-dependent: 330, 370, and 385 nm at pH 4.6, 7.4, and 10.4, respectively. 4-MU-α-GlcNS has been used to quantify heparin sulphamidase deficiencies associated with Mucopolisaccaridosis IIIA and other lysosomal disorders.

7-Aminoactinomycin D is a fluorescent DNA stain.

D-Ala-Lys-AMCA TFA is a proton-coupled oligopeptide transporter 1 (PEPT1) substrate characterized by its emission of blue fluorescence. It has been demonstrated through fluorescence analysis that this compound can be transported into liver cancer cells and Caco-2 cells. Its utility extends to the characterization of PEPT1-specific substrates or inhibitors [1] [2].

D & C Red no. 31 is an agent of dye.

Fluorescein Di-β-D-Glucuronide, a fluorescent probe, enables non-invasive imaging of intestinal bacterial β-glucuronidase activity in nude mice. This compound's utilization for both in vitro and in vivo imaging offers valuable insights into bacterial β-glucuronidase activity, thereby enhancing pharmacodynamic research on its specific inhibitors in animal models [1].

4-Methylumbelliferyl β-D-Galactopyranoside-6-sulfate (sodium salt) (4-MU-Gal-6S) is a fluorogenic substrate used to quantify N-acetylgalactosamine-6-sulphatase (GALNS) activity. 4-MU-Gal-6S is cleaved by GALNS to release the fluorescent moiety 4-MU. 4-MU fluorescence is pH-dependent with excitation maxima of 320 and 360 nm at low (1.97-6.72) and high (7.12-10.3) pH, respectively, and an emission maximum ranging from 445 to 455 nM, increasing as pH decreases. It has been used to detect Morquio disease type A, a lysosomal storage disorder in which GALNS is deficient. 4-MU-Gal-6S can be used to assess GALNS activity in a very small blood volume to determine the extent of deficiency.

Rose-β-D-Gal, a fluorescent dye, serves as a β-galactosidase substrate, producing a pink/magenta color upon reaction that facilitates the detection of β-gal activity [1] [2].

D&C Red No. 8 is a dye.

Purple-β-D-Gal, a chromogenic β-galactosidase substrate, undergoes enzymatic hydrolysis by intracellular β-galactosidase, yielding indoxyl molecules that oxidize and dimerize in situ to form water-insoluble indigo precipitates advantageous for β-galactosidase activity detection [1].

6-Chloro-3-indoxyl-α-D-mannopyranoside serves as a chromogenic substrate for the enzyme α-mannosidase, producing a salmon-colored precipitate following enzymatic cleavage.

D-Ala-Lys-AMCA TFA is a known substrate of proton-coupled oligopeptide transporter 1 (PEPT1) that emits blue fluorescence. D-Ala-Lys-AMCA TFA may be transported into Caco-2 cells and liver cancer cells.

D131 is an orange indoline organic dye with an absorption maximum in solution at λ=425 nm [1] [2].

Sodium 2,6-dibromo-4-(3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-2,2-dioxido-3H-benzo[d][1,2]oxathiol-3-yl)-3-methylphenolate is a useful organic compound for research related to life sciences. The catalog number is T64788 and the CAS number is 62625-32-5.

4-Methylumbelliferyl-β-D-glucuronide hydrate (MUG) is a fluorogenic substrat (λex=362 nm , λem=445 nm).

4-Nitrophenyl β-D-xylopyranoside serves as a chromogenic substrate for β-xylosidase, facilitating the assessment of enzyme activity.

4-Methylumbelliferyl-β-D-galactoside (MUG) is a fluorogenic substrate for β-galactosidase (β-gal).1Hydrolysis of MUG by β-gal releases the fluorescent moiety 4-MU, which displays a pH-dependent excitation maximum of 330, 370, and 385 nm at pH 4.6, 7.4, and 10.4, respectively, and an emission maximum between 445-454 nm.2MUG has been used to detect β-gal activity in intact bacteria, yeast, and mammalian cells.1 1.Vidal-Aroca, F., Giannattasio, M., Brunelli, E., et al.One-step high-throughput assay for quantitative detection of β-galactosidase activity in intact Gram-negative bacteria, yeast, and mammalian cellsBiotechniques40(4)433-434(2006) 2.Zhi, H., Wang, J., Wang, S., et al.Fluorescent properties of hymecromone and fluorimetric analysis of hymecromone in compound dantong capsuleJ. Spectrosc.1(1)147128(2013)

Fluorescein di-beta-D-galactopyranoside (FDG) is a fluorescent substrate for the detection of β-galactosidase in kinetoplastids and animals by flow cytometry , λex=485 nm, λem=535 nm.

D & C Red no. 30 is an agent of red dye.

D&C Red No. 27 Aluminum Lake is a drug and cosmetic synthetic dye. The FDA lists it as a safe additive for drugs and cosmetics as per FDA standards.

5-Bromo-4-chloro-3-indolyl-b-D-glucuronide sodium salt is a useful organic compound for research related to life sciences. The catalog number is T64896 and the CAS number is 129541-41-9.

D-Ala-Lys-AMCA is a known substrate of proton-coupled oligopeptide transporter 1 (PEPT1) that emits blue fluorescence. D-Ala-Lys-AMCA may be transported into Caco-2 cells and liver cancer cells.

2-NBDG is a fluorescent indicator for direct glucose uptake measurement. It is an indicator of cell viability.

Acid Violet 6B is an agent of dye.

Red 21 is a dye.

4',5'-Dibromofluorescein (Eosinic acid) is a fluorescent dye that can be used as a ligand for protein characterization by spectroscopic analysis.

X-Gluc Dicyclohexylamine (5-Bromo-4-chloro-3-indolyl-beta-D-glucuronide cyclohexylammonium salt) is a reagent to detect β-glucuronidase and can be used in molecular biology experiments to mark and select the expression of target genes.

Acid orange 7 (COLIPA C015) is a dye used to dye wool.

HADA Hydrochloride (HCC-Amino-D-alanine hydrochloride) is a blue (λem~450 nm) fluorescent D-amino acid (FDAA). FDAAs are efficiently incorporated into the peptidoglycans (PGs) of diverse bacterial species at the sites of PG biosynthesis. HADA Hydrochloride can be used in specific and covalent probing of bacterial growth with minimal perturbation.

C.I. Direct Black 17 is a compound of dye.

C12FDG (5-Dodecanoylaminofluorescein di-beta-D-Galactopyranoside) is used as a lipophilic green fluorescent substrate for detecting beta-galactose activity, a green fluorescent substrate, is a senescence marker and is often used in conjunction with flow cytometry.

Acridine Orange hydrochloride is a fluorescent dye of cell-permeable. It binds to nucleic acids, resulting in an altered spectral emission.It is used as a supravital stain and in fluorescence cytochemistry. It may cause mutations in microorganisms.

Girard's Reagent T (Trimethylacetohydrazideammonium Chloride) is a biochemical reagent. Girard's Reagent T under mild acid or alkaline conditions, reacts with aldehydes and ketones containing α-dicarbonyl functional groups to produce addition compounds which strongly absorb ultraviolet light.

Sudan II (Solvent Orange 7) is a dyes.

4-Nitrobenzoic acid (4Nitrobenzoic acid) is a pharmaceutical intermediate often found in the production of folic acid, DABA, PABA and dyes.

DIDS sodium salt (MDL101114ZA) is a dual inhibitor of ABCA1 and VDAC1.

Sodium 3-nitrobenzenesulfonate is a mild oxidant. Sodium 3-nitrobenzenesulfonate can protect the shade when fabrics are printed or steamed in pad dyeing and counteract the effect of reducing substances.

Pentetic Acid (Detarex) is an edetate and a chelating agent used in preparing radiopharmaceuticals.

Diphenyl Blue (Direct Blue 14) (Direct Blue 14) is used as a dye for a group of azo dye.

Acid Yellow 9 monosodium salt (Hydrogen 4-aminoazobenzene-3,4'-disulphonate (sodium salt)) is an azo dye, degraded by Pseudomonas fluorescens as a sole source of nitrogen, carbon, and energy for the bacterium.

3,6-Dichlorotrimellitic anhydride serves as the essential precursor in the synthesis of various dichlorinated fluoresceins and rhodamines.

8-(4-iodophenyl)-1,3,5,7-tetramethyl BODIPY is a novel BODIPY fluorescent dye for the treatment of cytotoxicity.

Boc-Gln-Ala-Arg-AMC hydrochloride is a fluorescent compound that serves as a substrate for trypsin and is also used to determine the protein hydrolysis activity of TMPRSS2.

6-CFDA N-succinimidyl ester (Carboxyfluorescein diacetate succinimidyl) is capable of spontaneously and irreversibly binding to free amines. Utilized in flow cytometry experiments for tracking cell division in both mammalian cells and bacteria. Used in combination with several cell permeabilizers as an effective, nondestructive fluorescencent stain to quickly detect bacterial cells.

Aluminum phthalocyanine chloride (Phthalocyanine Chloroaluminum) is an intensely blue-green-colored aromatic macrocyclic compound that is widely used in dyeing. Aluminum phthalocyanine chloride is a powerful photosensitizer and is useful in PDT.

FFN 511 hydrochloride is a fluorescent pseudo-neurotransmitters (FFNs) targeting neuronal vesicular monoamine transporter 2 (VMA T2).FFN 511 hydrochloride inhibits the binding of 5-hydroxytryptamine to VMA T2-containing membranes and can be used for labelling of dopaminergic nerve endings in acute slices of in vivo cortex-striatum. The excitation and emission maxima are 406 and 501 nm, respectively.