Red Stains Dyes and Indicators

Alfa Aesar™ Phenol Red sodium salt, ACS

Chemical Name or Material: Phenol Red sodium salt CAS: 34487-61-1 Purity Grade: ACS Grade Formula Weight: 376.37 MDL Number: MFCD00066901 Beilstein: 6260026 Merck Index: 14,7247

Eosin Y, 1% Solution in Water, ACROS Organics™

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

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

Methyl Red, Free Acid (Certified), Fisher Chemical

Chemical Name or Material: Methyl Red, Free Acid CAS: 493-52-7 Purity Grade: Certified Grade Molecular Formula: C15H15N3O2 Linear Formula: 4-(CH3)2N-C6H4-N:N-2-(CO2H)C6H4 Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: Acid Red 2

Chlorophenol Red, Water Soluble, ACROS Organics™

Chemical Name or Material: Chlorophenol Red, sodium salt CAS: 123333-64-2 Purity Grade: Pure Molecular Formula: C19H11Cl2NaO5S Formula Weight: 445.25 Synonym: 3', 3''-Dichlorophenolsulfonephthalein, sodium salt

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

MethyleRed, 0.02% W/v Solution in Methanol, ACROS Organics™

Chemical Name or Material: MethyleRed CAS: 845-10-3 Molecular Formula: C15H14N3NaO2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2Na Formula Weight: 291.29 MDL Number: MFCD00002426 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid, sodium salt

Thymolphthalein, 0.05% w/v solution in ethanol, Alfa Aesar™

Chemical Name or Material: Thymolphthalein Name Note: 0.05% w/v solution in ethanol CAS: 125-20-2 Physical Form: Liquid Molecular Formula: C28H30O4 Formula Weight: 430.55 MDL Number: MFCD00005909

Alfa Aesar™ Methyl Red

Chemical Name or Material: Methyl Red CAS: 493-52-7 Molecular Formula: C15H15N3O2 Formula Weight: 269.3 MDL Number: MFCD00002425 Beilstein: 750102 Merck Index: 14,6119 Synonym: C.I. 13020

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

Chemical Name or Material: Eosin B CAS: 548-24-3 Purity Grade: Pure Molecular Formula: C20H6Br2N2Na2O9 Formula Weight: 624.06 MDL Number: MFCD00005041 Synonym: 4', 5'-Dibromo-2', 7'-dinitrofluorescein

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

Alfa Aesar™ Chlorophenol Red sodium salt, 0.04% w/v aq. soln.

Chemical Name or Material: Chlorophenol Red sodium salt Formula Weight: 445.26 MDL Number: MFCD00151199

Phenol Red, ACROS Organics™

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

Alfa Aesar™ Sulforhodamine 101 acid chloride

Chemical Name or Material: Sulforhodamine 101 acid chloride CAS: 82354-19-6 Molecular Formula: C31H29ClN2O6S2 Formula Weight: 625.15 MDL Number: MFCD00012406 Beilstein: 8667894 Synonym: Texas Red®; Sulforhodamine 101 sulfonyl chloride

Eosin Y, pure, certified, 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'

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

Congo Red, Indicator grade, ACROS Organics™

Chemical Name or Material: Congo Red CAS: 573-58-0 Purity Grade: Indicator Grade Molecular Formula: C32H22N6Na2O6S2 Formula Weight: 696.66 MDL Number: MFCD00004028 Synonym: C.I. 22120

Erythrosin B

Chemical Name or Material: Erythrosin B CAS: 568-63-8 Molecular Formula: C20H6I4Na2O5 Formula Weight: 879.87 MDL Number: MFCD00144257

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'

Alfa Aesar™ Erie Garnet, ca. 80% dye content

Chemical Name or Material: Erie Garnet CAS: 2429-70-1 Name Note: ≈80% dye content Molecular Formula: C32H21N5O7S2Na2 Formula Weight: 697.65 MDL Number: MFCD00046442 Synonym: C.I. 22145; Congo Corinth

Alfa Aesar™ Methyl Red, 0.1% w/v solution in ethanol

Chemical Name or Material: Methyl Red Formula Weight: 269.3 MDL Number: MFCD00002425 UN Number: UN1170

Cresol Red, Water Soluble, Indicator Grade, ACROS Organics™

Chemical Name or Material: Cresol Red, sodium salt CAS: 62625-29-0 Purity Grade: Pure Molecular Formula: C21H17NaO5S Formula Weight: 404.4 MDL Number: MFCD00001618

Alfa Aesar™ Methyl Red hydrochloride, ACS

Chemical Name or Material: Methyl Red hydrochloride CAS: 63451-28-5 Purity Grade: ACS Grade Formula Weight: 305.77 MDL Number: MFCD00012614 Synonym: 2-[4-(Dimethylamino)phenyl]azobenzoic acid

Methyl Red Sodium Salt, Reagent ACS, ACROS Organics™

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

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

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™ Neutral Red, ACS

Chemical Name or Material: Neutral Red CAS: 553-24-2 Purity Grade: ACS Grade Molecular Formula: C15H17ClN4 Formula Weight: 288.78 MDL Number: MFCD00012651 Beilstein: 3918740 Merck Index: 14,6488 Synonym: Basic Red 5; C.I. 50040

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';

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

Cresol Red, Indicator Grade, Pure, ACROS Organics™

Chemical Name or Material: Cresol Red CAS: 1733-12-6 Purity Grade: Pure Molecular Formula: C21H18O5S Formula Weight: 382.42 MDL Number: MFCD00005878

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