Supplier: SIGMA ALDRICH MICROSCOPY

Sudan orange G belongs to the group of azo dyes, which are synthetic organic colorants. Members of azo dyes contain chromophoric azo groups (-N-N-).

Supplier: SIGMA ALDRICH MICROSCOPY

Murexide is the ammonium salt of purpuric acid that appears as a slightly reddish-purple powder and is soluble in water. It is mainly used as an indicator for complexometric titrations to measure water hardness and as a colorant/pigment in the dye industry.

Supplier: SIGMA ALDRICH MICROSCOPY

Reagent for assay of indole product of apotryptophanase and tryptophanase. DMAC produces colored adducts with flavanols for subsequent HPLC. It has been used in a chromogenic method for quantifying proanthocyandines in cranberry powder.

Supplier: SIGMA ALDRICH MICROSCOPY

Para red is a biological stain. It is used as a fat soluble chemical dye and food additive. It is a banned colorant and a number of analytical techniques have been developed to detect it in food. Para Red may be used to make standards for analysis.

Supplier: SIGMA ALDRICH MICROSCOPY

Erythrosin B disodium salt, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Disperse blue 1 is a grey to black powder. Disperse dyes are known to be insoluble in water and are applied to the substrate as suspensions or dispersions by dissolving in hydrophobic regions of the polymers making up the fiber.

Supplier: SIGMA ALDRICH MICROSCOPY

Acridine is a small cationic and planar dye that mainly binds to RNA and DNA. These dyes are strongly fluorescent. It resembles the structure of xanthene except that the heteroatom is nitrogen, not oxygen. Acridine is suitable for nucleic acid staining, particularly for cell cycle determination. Acridines are used as fluorescent materials for visualisation of biomolecules, and in laser technologies.

Supplier: SIGMA ALDRICH MICROSCOPY

Alcian Blue 8GX is used as a heteroglycan stain for neutral, sulfated and phosphated mucopolysaccharides and glycosaminoglycans in tissues such as cartilage and extracellular matrices.

Supplier: SIGMA ALDRICH MICROSCOPY

Bismarck brown Y, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Modified Giemsa stain may be used for the identification of each human chromosome by differentials staining.

Supplier: SIGMA ALDRICH MICROSCOPY

Erythrosin B disodium salt, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

3, 6-Diaminoacridine hydrochloride has been used for studying cation transfer at the liquid–liquid interface. An intercalating dye.

Supplier: SIGMA ALDRICH MICROSCOPY

p-Rosolic acid (C.I. 43800) is an acid-baseindicator from the triphenylmethane group. It is also known as aurin and 4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone.

Supplier: SIGMA ALDRICH MICROSCOPY

o-Dianisidine (3,3′-dimethoxybenzidine) is a peroxidase substrate suitable for use in ELISA procedures. This substrate produces a soluble end product that is yellow-orange in color and can be read spectrophotometrically at 405 nm. The reaction may be stopped with 5 M HCl.

Supplier: SIGMA ALDRICH MICROSCOPY

Alizarin has been used as a biological stain to dye cotton fabrics and is used as standard in UV-visible spectrophotometer.

Supplier: SIGMA ALDRICH MICROSCOPY

An intracellular fluorescent pH indicator.

Supplier: SIGMA ALDRICH MICROSCOPY

Metanil yellow has been used for staining of leukocyte granules. It is also used as a counterstain in microscopic sections.

Supplier: VWR Chemicals

Nuclear Fast Red, Gurr™ for microscopical staining

Supplier: SIGMA ALDRICH MICROSCOPY

1,4-Bis(methylamino)-9,10-anthraquinone 97% (dye content), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

2,3-Diaminonaphthalene is also known as 2,3-Naphthalenediamine or DAN. It is one of the isomers of naphthalene bearing two amino groups, which are also called naphthalenediamines. They are usually prepared by reducing the nitronaphthalene derivative and aminating the subsequent hydroxynaphthalene derivative.

Supplier: SIGMA ALDRICH MICROSCOPY

Victoria blue dyes are triaminodiphenylnaphthylmethanes, with lipophilic cations and large conjugated systems.

Supplier: SIGMA ALDRICH MICROSCOPY

Alginic acid is a high molecular weight linear polymer isolated from seaweed. It is a linear β-1→4-linked polymer of n-mannuronic and L-guluronic acid. It is an acid polysaccharide present in the extracellular matrix of brown algae.

Supplier: SIGMA ALDRICH MICROSCOPY

Purpurin (1, 2, 4-trihydroxyanthraquinone) is the key pigment present in the roots of Indian madder (Rubia cordifolia). This pigment produces colors, with distinctive heat and light resistant properties.

Supplier: SIGMA ALDRICH MICROSCOPY

Propyl-3,4,5-trihydroxybenzoate ≥98% (by HPLC) for histology and pathology, for diagnostic, Sigma-Aldrich®

Supplier: VWR Chemicals

IPTG (isopropyl-β-D-thiogalactopyranoside) ≥99.0%, Ultra Pure Grade

Supplier: SIGMA ALDRICH MICROSCOPY

Sudan red 7B (fat red bluish, solvent red 19, fat red 7B), Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY

Hematoxylin has been used for staining gastric cancer tissues, myocardial tissue, heart sections and ovarian nuclei.

Supplier: SIGMA ALDRICH MICROSCOPY

Methyl violet for microscopy (Bact., Bot., Hist.), indicator (pH 0.1 - 2.0), mixture of polymethylated pararosaniline hydrochlorides.

Supplier: SIGMA ALDRICH MICROSCOPY

Quinaldine red has been used as a fluorescent probe for α1-acid glycoprotein (AAG). It is also used a diagnostic assay manufacturing, hematology, histology.

Supplier: SIGMA ALDRICH MICROSCOPY

Sudan II has been used to determine its presence in commercial spices such as hot chilli food samples (LC–ESI–MS/MS).