yellow

Thiazole yellow G, for microscopy, is a cationic basic thiazine dye. This dye is applicable for the determination of uranium and thorium.

Fluorol Yellow 088 is a fluorescent dye used as a biomaterial or organic compound in life science research. It is particularly suitable for lipid staining in plant tissues, notably for the fluorescence imaging of suberin cell walls and hydrophobic structures. Its excitation wavelength is 365 nm, with an emission wavelength of 420 nm or greater.

Sudan I-BSA is a hapten-carrier protein conjugate formed by coupling Sudan I to bovine serum albumin (BSA). As a hapten, Sudan I alone cannot induce an immune response and must be conjugated to a large molecular protein to become a complete antigen with immunogenicity. Sudan I-BSA may be supplied as a lyophilized powder or as a solution. The solution is prepared in 0.01 M TBS (pH 7.4) buffer at a typical concentration of 1 mg/mL.

Sudan I-OVA is a hapten-carrier protein conjugate formed by coupling Sudan I to chicken ovalbumin (OVA). As a hapten, Sudan I alone cannot induce an immune response and must be conjugated to a large molecular protein to become a complete antigen with immunogenicity.Sudan I-OVA may be supplied as a lyophilized powder or as a solution. The solution is prepared in 0.01 M TBS (pH 7.4) buffer at a typical concentration of 1 mg/mL.

Sudan I-KLH is a hapten-carrier protein conjugate formed by coupling Sudan I to keyhole limpet hemocyanin (KLH). As a hapten, Sudan I alone cannot induce an immune response and must be conjugated to a large molecular protein to become a complete antigen with immunogenicity. Sudan I-KLH may be supplied as a lyophilized powder or as a solution. The solution is prepared in 0.01 M TBS (pH 7.4) buffer at a typical concentration of 1 mg/mL.

C.I. Solvent Yellow 33 is a non-toxic yellow dye suitable for industrial applications and various naval signaling devices.

Glycerol Tripropionate, a triester of glycerol and propionic acid, is a colorless-to-pale-yellow liquid used as an emulsifier/stabilizer in food/cosmetics and as a solvent/carrier in pharmaceuticals.

4-Methyl-2-nitrophenol is an organic chemical compound that appears as dark yellow to brown crystals or a fused solid at room temperature. 4-Methyl-2-nitrophenol is primarily used as a versatile intermediate for complex chemical synthesis.4-Methyl-2-nitrophenol is notably toxic by ingestion or skin contact, and it can cause significant skin, eye, and respiratory tract irritation upon exposure.

CI 21100 A kind of organic pigment, yellow powder. Heating at 150 ℃ for 20min slightly green. In concentrated sulfuric acid for the red light color, diluted brown light red; in concentrated nitric acid for the brown light yellow. Mainly used for coloring rubber, plastic products, etc., also used in ink and paint industry.

3'-Hydroxy-4'-Methylacetophenone is a colorless or pale yellow liquid characterized by a distinct aromatic odor. This polar compound demonstrates solubility in alcohol, ether, ketone, and ester solvents.

N-Decanoyl p-nitroaniline (DepNA) is a nitroaniline fatty acid amide used to measure fatty acid amide hydrolase (FAAH) activity. FAAH, which accepts various amide head groups beyond the ethanolamine of its endogenous substrate anandamide (AEA), can hydrolyze fatty acid amides with fewer carbons and fewer double bonds than arachidonate. When exposed to FAAH activity, DepNA releases the yellow colorimetric dye p-nitroaniline (ε = 13,500 at 410 nm), enabling fast and convenient FAAH activity measurement using a 96-well plate spectrophotometer.

Epoxidized soya bean oil (ESBO) is an organic compound derived from plant oil, serving as a plasticizer and stabilizer in various applications. It is produced by the epoxidation of soybean oil, introducing epoxy groups into the oil's fatty acid chains. ESBO is a viscous, pale yellow liquid that is soluble in many organic solvents, such as chloroform and ethanol, but not in water. It is commonly used as a plasticizer in polyvinyl chloride (PVC) products, including toys, food packaging materials, and medical devices. In addition to its plasticizing properties, ESBO functions as an antioxidant and ultraviolet (UV) stabilizer, helping to prevent the degradation and discoloration of PVC products over time. ESBO is also researched for its potential use in biodegradable plastics and as a bio-based alternative to traditional petroleum-derived plasticizers.

4-Nitrophenyl α-L-rhamnopyranoside is a substrate commonly employed in various biochemical assays to measure the activity of rhamnose-hydrolyzing enzymes such as α-L-rhamnosidase. The compound possesses unique chemical properties that enable it to be hydrolyzed by these enzymes, resulting in the formation of a yellow product known as p-nitrophenol. This characteristic makes it a valuable tool for detecting and quantifying rhamnose-hydrolyzing enzyme activity in biological samples or microbial cultures.

6-Bromo-2-naphthyl-β-D-galactopyranoside (6-Bromo-2-naphthyl-beta-D-galactopyranoside) is a chromogenic substrate frequently used for detecting β-galactosidase enzyme activity. Upon hydrolysis by β-galactosidase, it produces a yellow precipitate, indicating the presence of the enzyme.

4-Nitrophenyl butyrate is composed of a butyric acid chain esterified with a 4-nitrophenol group, giving it a yellow appearance. This compound is commonly used as a substrate in enzyme assays to measure the activity of esterases and lipases. When these enzymes cleave the ester bond, the nitrophenol group is released, changing the color from yellow to orange. The rate of this color change can be used to determine enzyme activity. Additionally, 4-Nitrophenyl butyrate serves as a reagent in organic synthesis and as an intermediate in dye production.

Sodium 5-bromo-4-chloro-1H-indol-3-yl phosphate is often employed in biochemistry and molecular biology as a substrate for phosphatase assays. This compound is converted by phosphatase into a yellow product, which can be easily quantified using spectrophotometric or fluorometric methods. Additionally, it serves as a valuable reagent in enzyme-catalyzed reactions and as a tool for studying signal transduction pathways.

Chromeazurol S is a compound classified as an azo dye. It is frequently utilized as an indicator in analytical chemistry to detect metal ions such as copper, nickel, and cobalt. In the presence of these metal ions, Chromeazurol S changes color from yellow to blue, enabling their detection and quantification. This compound can be applied on test papers or directly added to solutions for analysis.

L-Leucyl-4-nitroanilide hydrochloride is a substrate commonly employed in various biochemical assays for assessing the activity of enzymes such as proteases that cleave peptide bonds. With its unique chemical properties, L-Leucine p-nitroanilide hydrochloride can be cleaved by these enzymes to produce a yellow product known as p-nitroaniline. This characteristic makes it a valuable tool for detecting and quantifying protease activity in biological samples such as blood or tissue extracts.

Chlorophenol red β-D-galactopyranoside sodium (CPRG) is a yellow chromogenic substrate for β-D-Galactosidase .

Methyl red hydrochloride is an azo dye that serves as a pH indicator. It exhibits a red color at a pH of 4.4 and turns yellow at a pH of 6.0.

Bathocuproine disulfonate disodium (BCS) is an organic compound utilized as a highly sensitive colorimetric reagent for copper ions in biochemical and analytical applications. Its bright yellow color and specific light absorption make it effective for detecting and quantifying trace amounts of copper. In biochemistry, BCS is commonly employed to study the role of copper ions in various biological processes. Copper, being an essential nutrient for many organisms, can be toxic at high concentrations, thus precise measurement is crucial to understanding its impact on living systems. Analytically, BCS is often used for environmental monitoring and assessing copper pollution in water quality testing. It can detect copper even at very low concentrations, making it a valuable tool for identifying potential contamination sources and evaluating the impact of industrial activities on aquatic ecosystems.

4-Nitrophenyl phosphate ditromethamine is an enzyme substrate frequently employed in biochemical assays to evaluate the activity of various phosphatases, including alkaline phosphatase. Its unique chemical properties allow phosphatases to hydrolyze it, resulting in a yellow product detectable via spectrophotometry.

Disodium 6,6′-oxybis(2-naphthalenesulfonate) is an impurity found in Sunset Yellow FCF and functions as a surfactant, emulsifier, and dispersant.