Red Stains Dyes and Indicators

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

Alfa Aesar™ Phenol Red sodium salt, 0.02% w/v aq. soln.

Chemical Name or Material: Phenol Red sodium salt Formula Weight: 376.37 MDL Number: MFCD00066901

Methyl Red, Sodium Salt (Certified ACS), Fisher Chemical

Chemical Name or Material: Methyl Red, Sodium Salt CAS: 845-10-3 Purity Grade: Certified ACS Grade Molecular Formula: C15H14N3O2Na Linear Formula: 4-(CH3)2NC6H4-N:N-2-(CO2Na)C6H4 Formula Weight: 291.28 MDL Number: MFCD00002426 Synonym: Acid Red 2, Sodium Salt

Alfa Aesar™ Congo Red, indicator grade

Chemical Name or Material: Congo Red CAS: 573-58-0 Purity Grade: Indicator Grade Molecular Formula: C32H22N6Na2O6S2 Formula Weight: 696.67 MDL Number: MFCD00004028 Beilstein: 3894858 Merck Index: 14,2498 Synonym: C.I. 22120

Methyl Red, sodium salt, indicator, pure, ACROS Organics™

Chemical Name or Material: Methyl Red, sodium salt Name Note: pure CAS: 845-10-3 Purity Grade: Extra Pure Molecular Formula: C15H14N3NaO2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2Na Formula Weight: 291.27 MDL Number: MFCD00002426 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid, sodium salt

Phenolphthalein, 0.5% w/v in alcohol, Alfa Aesar™

Chemical Name or Material: Phenolphthalein CAS: 77-09-8 Physical Form: Liquid Molecular Formula: C20H14O4 Formula Weight: 318.33 MDL Number: MFCD00005913

Eosin Y, pure, high purity, biological stain, ACROS Organics™

Chemical Name or Material: Eosin Y Name Note: High purity biological stain CAS: 17372-87-1 Purity Grade: Pure Molecular Formula: C20H6Br4Na2O5 Formula Weight: 691.85 MDL Number: MFCD00005040 Synonym: 2', 4', 5'

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

Alfa Aesar™ Sudan III (chromatographic standard)

Chemical Name or Material: Sudan III (chromatographic standard) CAS: 85-86-9 Molecular Formula: C22H16N4O Formula Weight: 352.4 MDL Number: MFCD00003905 Beilstein: 931185 Merck Index: 14,8884 Synonym: C.I. 26100; Solvent Red 23

Fast Garnet GBC Base 97%, ACROS Organics™

Chemical Name or Material: Fast Garnet GBC base Name Note: 97% CAS: 97-56-3 Assay: ≥96.0% Assay Percent Range: 97% Molecular Formula: C14H15N3 Linear Formula: NH2C6H3(CH3)N=NC6H4CH3 Formula Weight: 225.29 MDL Number: MFCD00007733 Synonym: 2-Aminoazotoluene

Eosin Y, pure, Indicator grade, ACROS Organics™

Chemical Name or Material: Eosin Y CAS: 17372-87-1 Purity Grade: Pure Molecular Formula: C20H6Br4Na2O5 Formula Weight: 691.85 MDL Number: MFCD00005040 Synonym: 2';, 4';, 5';

Alizarin Red S, pure, certified, ACROS Organics™

Chemical Name or Material: Alizarin Red S CAS: 130-22-3 Purity Grade: Pure Molecular Formula: C14H7NaO7S Formula Weight: 342.26 MDL Number: MFCD00013049 Synonym: 9, 10-Dihydro-3, 4-dihydroxy-9

Congo Red, 0.1% Aqueous Solution Products for Science Education

Chemical Name or Material: Congo Red, 0.1% Aqueous Solution CAS: 573-58-0 CAS: 7732-18-5 Assay Percent Range: <1% w/v

Methyl Red, ACS reagent, ACROS Organics™

Chemical Name or Material: Methyl Red Name Note: Pure CAS: 493-52-7 Purity Grade: ACS Reagent Grade Molecular Formula: C15H15N3O2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2H Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid

Alfa Aesar™ Cresol Red sodium salt

Chemical Name or Material: Cresol Red sodium salt CAS: 62625-29-0 Molecular Formula: C21H17NaO5S Formula Weight: 404.42 MDL Number: MFCD00001618 Synonym: o-Cresolsulfonephthalein sodium salt

Methyl Red, pure, indicator, ACROS Organics™

Chemical Name or Material: Methyl Red CAS: 493-52-7 Purity Grade: Pure Molecular Formula: C15H15N3O2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2H Formula Weight: 269.3 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid

Bromophenol Red, pure, ACROS Organics™

Chemical Name or Material: Bromophenol Red CAS: 2800-80-8 Purity Grade: Pure Molecular Formula: C19H12Br2O5S Formula Weight: 512.19 MDL Number: MFCD00023014 Synonym: 5', 5''-Dibromophenolsulfonphthalein

Alfa Aesar™ Ethyl Red

Chemical Name or Material: Ethyl Red CAS: 76058-33-8 Molecular Formula: C17H19N3O2 Formula Weight: 297.36 MDL Number: MFCD00002427 Beilstein: 3366056 Synonym: 2-(4-Diethylaminophenylazo)benzoic acid

Fuchsin Basic (Certified Biological Stain), Fisher Chemical

Chemical Name or Material: Fuchsin Basic CAS: 632-99-5 Purity Grade: Certified Biological Stain Physical Form: Solid Molecular Formula: C20H19N3 · HCl MDL Number: MFCD00001657 Synonym: Magenta

Alizarin Red S, FSE Products for Science Education

Chemical Name or Material: Alizarin Red S CAS: 130-22-3 Molecular Formula: C14H7NaO7S Linear Formula: C14H7NaO7S Formula Weight: 342.26 Synonym: Mordant Red 3

Alfa Aesar™ Direct Red 80

Chemical Name or Material: Direct Red 80 CAS: 2610-10-8 Molecular Formula: C45H26N10Na6O21S6 Formula Weight: 1373.09 MDL Number: MFCD00054389 Synonym: C.I. 35780; Sirius Red

Alfa Aesar™ Cresol Red

Chemical Name or Material: Cresol Red CAS: 1733-12-6 Molecular Formula: C21H18O5S Formula Weight: 382.44 MDL Number: MFCD00005878 Beilstein: 343399 Merck Index: 14,2578 Synonym: o-Cresolsulfonephthalein

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

Phenol Red, Sodium Salt (Certified ACS), Fisher Chemical

Chemical Name or Material: Phenol Red, Sodium Salt CAS: 34487-61-1 Purity Grade: Certified ACS Grade Molecular Formula: C19H13NaO5S Linear Formula: C6H4SO2OC(C6H4-4-OH)(C6H4-4-ONa) Formula Weight: 376.37 MDL Number: MFCD00066901 Synonym: Phenolsulfonephthalein Sodium Salt

Phenolphthalein, ACS

Chemical Name or Material: Phenolphthalein CAS: 77-09-8 Name Note: For analysis ACS Purity Grade: ACS Grade Molecular Formula: C20H14O4 Formula Weight: 318.33 MDL Number: MFCD00005913 Beilstein: 284423 Merck Index: 14,7243

Methyl Red, ACS, Alfa Aesar™

Chemical Name or Material: Methyl Red Name Note: For analysis ACS CAS: 493-52-7 Purity Grade: ACS Grade Physical Form: Crystalline Molecular Formula: C15H15N3O2 Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: C.I. 13020

Methyl Red Indicator Solution, 0.02% Products for Science Education

Chemical Name or Material: Methyl Red Indicator Solution, 0.02% CAS: 845-10-3 Linear Formula: C15H14N3O2Na Formula Weight: 291.28 Synonym: Methyl Red In Alcohol

Alfa Aesar™ Oil Red O

Chemical Name or Material: Oil Red O CAS: 1320-06-5 Molecular Formula: C26H24N4O Formula Weight: 408.51 MDL Number: MFCD00003898 Beilstein: 3491382 Synonym: C.I. 26125; Solvent Red 27

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

Chemical Name or Material: Ruthenium red tetrahydrate Name Note: Pure CAS: 12790-48-6 Purity Grade: Extra Pure Assay: 34.6 to 36.1% (ruthenium) Molecular Formula: Cl6H42N14O2Ru3·4H2O Linear Formula: {(NH3)5Ruoru(NH3)4oru(NH3)5}Cl6·4H2O Formula Weight: 858.35 MDL Number: MFCD00167176

Nuclear Fast Red, 94%, pure, ACROS Organics™

Chemical Name or Material: Nuclear Fast Red CAS: 6409-77-4 CAS Min %: 92.0 CAS Max %: 100.0 Purity Grade: Pure Assay Percent Range: 94% Molecular Formula: C14H8NNaO7S Formula Weight: 357.26 MDL Number: MFCD00078493 Synonym: C.I. 60760

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