CAS: 547-57-9 EC No: 208-924-8 MDL No: MFCD00007499 RTECS: DB6145180 Powder Molecular Formula: C₁₂H₉N₂NaO₅S MW: 316.27

Azomethine H is a reagent for the determination of boron in soil, plants, composts, manure, water and nutrient solutions.

Sulforhodamine B is a fluorescent dye. Sulforhodamine B can be used as a protein tag - by sulfamido condensation with a proteinaceous substrate containing a primary amine function. Sulforhodamine B will fluoresce red. Because of its red fluorescence it can be used in conjuction with fluorescein…

A red, anionic xanthene dye, has been used as a contrast or counter stain to hematoxylin, crystal violet and other nuclear stains, in both plant and animal tissue. Erythrosin B sodium salt is used as a counter stain to hematoxylin, crystal violet and other nuclear stains, in both plant and…

CAS: 76-54-0 EC No: 200-968-6 MDL No: MFCD00005047 Solid Molecular Formula: C₂₀H₁₀Cl₂O₅ MW: 401.20 Melting Point: 280° (decomposes)

Primuline is a dye containing the benzothiazole ring system. The primulines are considered derivatives of dehydrothiotoluidine (aminobenzenyltoluylmercaptan). It is pale yellow in solution under visible light and is blue fluorescent under ultraviolet. Primulin is used in retrograde double…

Hematoxylin is Gill’s Formulation 2; a nuclear counter stain of blue-violet color. It is extracted from the heartwood of the logwood tree. When oxidized it forms haematein, a compound that forms strongly coloured complexes with certain metal ions, the most notable ones being Fe(III) and…