Stains Dyes and Indicators

Methyl Viologen hydrate, 98%, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Methyl Viologen hydrate Name Note: 98% CAS: 1910-42-5 Assay: ≥97.5% (on dry substance) Assay Percent Range: 98% Molecular Formula: C12H14Cl2N2·xH2O Formula Weight: 257.15 MDL Number: MFCD00150001 Synonym: Paraquat, dichloride

Phenol Red, Water Soluble, Indicator, ACROS Organics™

Chemical Name or Material: Phenol Red, sodium salt CAS: 34487-61-1 Purity Grade: Pure Molecular Formula: C19H13NaO5S Formula Weight: 376.35

Rhodanine 99%, ACROS Organics™

Chemical Name or Material: Rhodanine Name Note: 99% CAS: 141-84-4 Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C3H3NOS2 Formula Weight: 133.2 MDL Number: MFCD00005488 Synonym: 2-Thioxo-4-thiazolidinone

Thymol Blue, Indicator, ACROS Organics™

Chemical Name or Material: Thymol Blue CAS: 76-61-9 Purity Grade: Extra Pure Molecular Formula: C27H30O5S Formula Weight: 466.58 MDL Number: MFCD00005869 Synonym: TB

Bromothymol Blue Solution Products for Science Education

Chemical Name or Material: Bromothymol Blue Solution CAS: 34722-90-2 Linear Formula: C27H27Br2O5SNa Formula Weight: 646.37

Alfa Aesar™ Fast Blue BB base

Chemical Name or Material: Fast Blue BB base CAS: 120-00-3 Molecular Formula: C17H20N2O3 Formula Weight: 300.35 MDL Number: MFCD00009091 Beilstein: 3416889 Synonym: C.I. 37175; 4'-Amino-2',5'-diethoxybenzanilide

Safranin O Products for Science Education

Chemical Name or Material: Safranin O CAS: 477-73-6 Molecular Formula: C20H19N4Cl Linear Formula: C20H49ClN4 Formula Weight: 350.85 Synonym: Basic Red 2

Thymolphthalein, Indicator, Pure, ACROS Organics™

Chemical Name or Material: Thymolphthalein Name Note: Indicator CAS: 125-20-2 Purity Grade: Extra Pure Molecular Formula: C28H30O4 Formula Weight: 430.53 MDL Number: MFCD00005909 Synonym: TP

Sudan Black B, high purity biological stain, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Sudan Black B, high purity biological stain CAS: 4197-25-5 Purity Grade: High Purity Biological Stain Molecular Formula: C29H24N6 Formula Weight: 456.54 MDL Number: MFCD00006919 Synonym: C.I. 26150

Cresyl Violet acetate, pure, high purity biological stain, ACROS Organics™

Chemical Name or Material: Cresyl violet acetate CAS: 10510-54-0 Purity Grade: Extra Pure Molecular Formula: C18H15N3O3 Formula Weight: 321.34 MDL Number: MFCD00013151

Thymol Blue Products for Science Education

Chemical Name or Material: Thymol Blue, Sodium Salt CAS: 81012-93-3 Assay Percent Range: 100% w/v Linear Formula: C27H29NaO5S Formula Weight: 466.267 Synonym: Thymolsulfonephthalein

Alfa Aesar™ Chicago Sky Blue 6B

Chemical Name or Material: Pontamine Sky Blue 6BX CAS: 2610-05-1 Molecular Formula: C34H24N6Na4O1 Formula Weight: 992.79 MDL Number: MFCD00004020

p-Naphtholbenzein Indicator Solution, Fisher Chemical Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: p-Naphtholbenzein Indicator Solution CAS: 145-50-6 CAS: 108-88-3 CAS: 67-63-0 CAS: 7732-18-5 MDL Number: MFCD00078492

Thermo Scientific™ Richard-Allan Scientific™ Papanicolaou Stain OGs Available on GSA/VA Contract for Federal Government customers only.

Stain gynecological specimens with Thermo Scientific™ Richard-Allan Scientific™ Papanicolaou Stain OGs.

Alizarin Red S sodium salt, 1% w/v aq. sol., Alfa Aesar™

Chemical Name or Material: Alizarin Red S sodium salt CAS: 130-22-3 Physical Form: Liquid Molecular Formula: C14H7O7SNa MDL Number: MFCD00013049

Thermo Scientific™ Richard-Allan Scientific™ Gram Stain (Tissue) Kit Available on GSA/VA Contract for Federal Government customers only.

Identify gram-positive and gram-negative bacteria in tissue sections with Thermo Scientific™ Richard-Allan Scientific™ Gram Stain (Tissue)

2,6-Dichloroindophenol, Sodium Salt Hydrate, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: 2, 6-Dichloroindophenol, sodium salt hydrate Assay: ≥98.0% (on dry substance) (Total base) Assay Percent Range: 98+% Molecular Formula: C12H6Cl2NNaO2·xH2O Formula Weight: 290.07 Synonym: Tillman's reagent hydrate

2,6-Dichloroindophenol Sodium Salt Products for Science Education

Chemical Name or Material: 2, 6-Dichloroindophenol Sodium Salt CAS: 620-45-1 Linear Formula: NaOC6H4N·C6H2(Cl2)·O Formula Weight: 290.08 Synonym: 2, 6-Dichlorophenol Indophenol Sodium Salt

Thymol Blue Solution, 0.04% Products for Science Education

Chemical Name or Material: Thymol Blue Solution, 0.04% CAS: 62625-21-2 CAS: 7732-18-5 Assay Percent Range: 0.04% w/v Linear Formula: Sn

Alfa Aesar™ beta-Naphthol Violet

Chemical Name or Material: beta-Naphthol Violet CAS: 7143-21-7 Molecular Formula: C16H9N3Na2O9S2 Formula Weight: 497.37 MDL Number: MFCD00021457

Thymol Blue (Certified ACS), Fisher Chemical

Chemical Name or Material: Thymol Blue CAS: 76-61-9 Purity Grade: Certified ACS Grade Molecular Formula: C27H30O5S Formula Weight: 466.6 MDL Number: MFCD00005869 Synonym: Thymolsulfonephthalein

Aceto-Orcein Solution, 2% Products for Science Education

Chemical Name or Material: Aceto-Orcein Solution, 2% CAS: 64-19-7 CAS: 1400-62-0 CAS: 7732-18-5 Assay Percent Range: 31.5% v/v Synonym: 2% Solution

Thermo Scientific™ Lab Vision™ Mayer's Hematoxylin

Designed for use in histological applications, Thermo Scientific™ Lab Vision™ Mayer's Hematoxylin provides superior quality.

Rhodamine B, Fisher Chemical

Chemical Name or Material: Rhodamine B CAS: 81-88-9 Molecular Formula: C28H31 ClN2O3 Formula Weight: 479 MDL Number: MFCD00011931 Synonym: Tetraethylrhodamine

Aluminon, ACROS Organics™

Chemical Name or Material: Aluminon CAS: 569-58-4 Molecular Formula: C22H23N3O9 Formula Weight: 473.44 MDL Number: MFCD00040925 Synonym: Aurintricarboxylic acid, triammonium salt

Fluorescamine, pure, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Fluorescamine CAS: 38183-12-9 Purity Grade: Pure Molecular Formula: C17H10O4 Formula Weight: 278.26

Thioflavin T, ACROS Organics™

Chemical Name or Material: Thioflavin T CAS: 2390-54-7 Molecular Formula: C17H19ClN2S Formula Weight: 318.85 MDL Number: MFCD00011944 Synonym: Basic Yellow 1

Safranine O, 85%, ACROS Organics™

Chemical Name or Material: Safranine O Name Note: Pure CAS: 477-73-6 Purity Grade: Pure Assay Percent Range: 85% Molecular Formula: C20H19ClN4 Formula Weight: 350.84 MDL Number: MFCD00011759 Synonym: 3, 7-Diamino-2, 8-dimethyl-5-phenylphenazinium chloride

Phenolphthalein in IPA Solution Products for Science Education

Chemical Name or Material: Phenolphthalein in IPA Solution CAS: 67-63-0 CAS: 77-09-8 CAS: 7732-18-5 Formula Weight: Mixture

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