Stains Dyes and Indicators

Calmagite, indicator grade, Alfa Aesar

Chemical Name or Material: Calmagite CAS: 3147-14-6 Purity Grade: Indicator Grade Molecular Formula: C17H14N2O5S Formula Weight: 358.37

Methylene Blue trihydrate, 95%, pure, ACROS Organics™

Chemical Name or Material: Methylene Blue trihydrate Name Note: 95% CAS: 7220-79-3 Purity Grade: Pure Assay: ≥94% (on dry substance) Assay Percent Range: 95% Molecular Formula: C16H18ClN33H2O Formula Weight: 373.89 MDL Number: MFCD00150008 Synonym: Basic Blue 9 trihydrate

Thermo Scientific™ Richard-Allan Scientific™ Gill™ 1, 2, 3 Hematoxylin

With three strengths available, the Thermo Scientific™ Richard-Allan Scientific™ Gill™ 1, 2, 3 Hematoxylin allows complete control of staining intensities.

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

Chemical Name or Material: Tiron™ CAS: 149-45-1 Molecular Formula: C6H4Na2O8S2·H2O Linear Formula: (HO)2C6H2(SO3Na)2·H2O Formula Weight: 332.21 MDL Number: MFCD00149531 Synonym: 4,5-Dihydroxy-1,3-benzenedisulfonic acid, disodium salt monohydrate

Toluidine Blue O, Certified, 65% min dye content, Alfa Aesar™

Formula Weight: 305.83 MDL Number: MFCD00011934 Synonym: Basic Blue 17,C.I. 52040 Physical Form: Powder Chemical Name or Material: Toluidine Blue O Molecular Formula: C15H16ClN3S CAS: 92-31-9 TSCA: Yes Packaging: Glass bottle Assay: ≥65% dye content

Eriochrome Black T Solution, ACROS Organics™

Chemical Name or Material: Eriochrome Black T solution CAS: 1787-61-7 Molecular Formula: C20H12N3NaO7S Formula Weight: 461.38 MDL Number: MFCD00003935 Synonym: 3-Hydroxy-4-(1-hydroxy-2-naphthylazo)-7-nitro-1-naphthalene sulfonic acid, sodium salt

Thermo Scientific™ Richard-Allan Scientific™ Modified Harris Hematoxylin

Use Thermo Scientific™ Richard-Allan Scientific™ Modified Harris Hematoxylin, a regressive nuclear stain, for both histology and cytology.

Thymol Blue, ACROS Organics™

Chemical Name or Material: Thymol Blue Name Note: For analysis ACS CAS: 76-61-9 Purity Grade: ACS Reagent Grade Molecular Formula: C27H30O5S Formula Weight: 466.58 MDL Number: MFCD00005869 Synonym: TB

Tetrabromophenolphthalein Ethyl Ester, Potassium Salt, Indicator Grade, ACROS Organics™

Chemical Name or Material: Tetrabromophenolphthalein ethyl ester, potassium salt CAS: 62637-91-6 Purity Grade: Extra Pure Molecular Formula: C22H13Br4KO4 Formula Weight: 700.05 MDL Number: MFCD00011662

Rose Bengal, 85%, pure, high purity, Biological stain, ACROS Organics™

Chemical Name or Material: Rose Bengal CAS: 632-69-9 Purity Grade: Pure Assay Percent Range: 85% Molecular Formula: C20H2Cl4I4Na2O5 Formula Weight: 1017.65 MDL Number: MFCD00005043 Synonym: Acid Red 94

Resazurin, Sodium Salt, High Purity Biological Stain, ACROS Organics™

Chemical Name or Material: Resazurin, sodium salt CAS: 62758-13-8 Purity Grade: Pure Molecular Formula: C12H6NNaO4 Formula Weight: 251.17 MDL Number: MFCD00005036 Synonym: 7-Hydroxy-3H-phenoxazin-3-one 10-oxide, sodium salt

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

Produces results similar to those achieved with conventional Papanicolaou stains

Congo Red, Biological Stain, pH Indicator Products for Science Education

Chemical Name or Material: Congo Red, Biological Stain, pH Indicator CAS: 573-58-0 Molecular Formula: C32H22N6Na2O6S2 Linear Formula: C32H22N6Na2O6S2 Formula Weight: 696.67 Synonym: C.I. Direct Red 28

Loading Dye 10X Products for Science Education

Chemical Name or Material: Loading Dye 10X CAS: 62625-28-9 CAS: 77-86-1 CAS: 57-5-1 CAS: 7732-18-5

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

Auramine O, pure, biological stain, ACROS Organics™

Chemical Name or Material: Auramine O CAS: 2465-27-2 Purity Grade: Extra Pure Molecular Formula: C17H21N3·HCl Formula Weight: 303.83 MDL Number: MFCD00012484 Synonym: 4, 4'-(Imidocarbonyl)bis(N, N-dimethylaniline) monohydrochloride

Sudan I, ACROS Organics™

Chemical Name or Material: Sudan I CAS: 842-07-9 Purity Grade: Extra Pure Molecular Formula: C16H12N2O Formula Weight: 248.28 MDL Number: MFCD00003911 Synonym: 1-Phenylazo-2-naphthol

Erythrosin B, pure, high purity, biological stain, ACROS Organics™

Chemical Name or Material: Erythrosin B CAS: 16423-68-0 Purity Grade: Pure Molecular Formula: C20H6I4Na2O5 Formula Weight: 879.85 MDL Number: MFCD00144257 Synonym: Acid Red 51

Fluorescein, Laser Grade 99%, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Fluorescein Name Note: 99% CAS: 2321-07-5 Purity Grade: Pure Assay: ≥98.5% Assay Percent Range: 99% Molecular Formula: C20H12O5 Formula Weight: 332.3

New Methylene Blue N, zinc chloride double salt, pure, ACROS Organics™

Chemical Name or Material: New Methylene Blue N, zinc chloride double salt CAS: 1711654 Purity Grade: Pure Molecular Formula: 0·5 ZnCl2 Formula Weight: 416.04 MDL Number: MFCD00078135 Synonym: Basic Blue 24

Evans Blue (Certified), Fisher Chemical

Chemical Name or Material: Evans Blue CAS: 314-13-6 Purity Grade: Certified Grade Molecular Formula: C34H24N6Na4O14S4 Formula Weight: 960.83 MDL Number: MFCD00004021 Synonym: Azovan blue

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.

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

Demonstrate amyloid with Thermo Scientific™ Richard-Allan Scientific™ Amyloid Stain.

Thermo Scientific™ Richard-Allan Scientific™ Modified Grocott's Methenamine Silver (Periodic Acid) Available on GSA/VA Contract for Federal Government customers only.

Distinguish fungi, basement membranes and opportunistic organisms such as Pneumocystis Carinii in tissue sections with Thermo Scientific™ Richard-Allan Scientific™ Modified Grocott's Methenamine Silver (Periodic Acid)

Phenol Red, Indicator, ACROS Organics™

Chemical Name or Material: Phenol Red CAS: 143-74-8 Purity Grade: Extra Pure Molecular Formula: C19H14O5S Formula Weight: 354.38 MDL Number: MFCD00003552 Synonym: Phenolsulfonephthalein

Ponceau S, pure, ACROS Organics™

Chemical Name or Material: Ponceau S CAS: 6226-79-5 Purity Grade: Pure Molecular Formula: C22H12N4Na4O13S4 Formula Weight: 760.54 MDL Number: MFCD00003892 Synonym: 3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2, 7-naphthalenedisulfonic acid, tetrasodium salt

Safranine O, 95%, ACROS Organics™

Chemical Name or Material: Safranine O Name Note: Pure CAS: 477-73-6 Purity Grade: Pure Assay Percent Range: 95% Molecular Formula: C20H19ClN4 Formula Weight: 350.84 MDL Number: MFCD00011759 Synonym: 3, 7-Diamino-2, 8-dimethyl-5-phenylphenazinium chloride

Rhodamine 123, +99%, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Rhodamine 123 Name Note: 99+% CAS: 62669-70-9 Purity Grade: Extra Pure Assay Percent Range: 99+% Molecular Formula: C21H17ClN2O3 Formula Weight: 380.82 MDL Number: MFCD00012664

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