Stains and Dyes

A variety of solutions used to selectively bind to and enhance the visibility of biological structures using color and/or fluorescence; used for histology, protein staining, electrophoresis, bacterial classification, blotting, etc.

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1,366 – 1,380 of 7,126 results

1,366

Quinizarin Blue 90.0+%, TCI America™

CAS: 81-48-1 Molecular Formula: C21H15NO3 Molecular Weight (g/mol): 329.355 MDL Number: MFCD00019148 InChI Key: LJFWQNJLLOFIJK-UHFFFAOYSA-N Synonym: 1-Hydroxy-4-p-toluidinoanthraquinone PubChem CID: 6680 IUPAC Name: 1-hydroxy-4-(4-methylanilino)anthracene-9,10-dione SMILES: CC1=CC=C(C=C1)NC2=C3C(=C(C=C2)O)C(=O)C4=CC=CC=C4C3=O

Pricing & Availability
Specifications

PubChem CID	6680
CAS	81-48-1
Molecular Weight (g/mol)	329.355
MDL Number	MFCD00019148
SMILES	CC1=CC=C(C=C1)NC2=C3C(=C(C=C2)O)C(=O)C4=CC=CC=C4C3=O
Synonym	1-Hydroxy-4-p-toluidinoanthraquinone
IUPAC Name	1-hydroxy-4-(4-methylanilino)anthracene-9,10-dione
InChI Key	LJFWQNJLLOFIJK-UHFFFAOYSA-N
Molecular Formula	C21H15NO3

1,367

Wright's Stain [for Microscopy and Bacteriology], TCI America™

CAS: 68988-92-1 Molecular Formula: C36H27Br4N3O5S+2 Molecular Weight (g/mol): 933.304 MDL Number: MFCD00082143 InChI Key: AXIKDPDWFVPGOD-UHFFFAOYSA-O PubChem CID: 25113599 IUPAC Name: [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-10-ium-9-yl)benzoic acid SMILES: CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.C1=CC=C(C(=C1)C2=C3C=C(C(=C(C3=[O+]C4=C(C(=C(C=C24)Br)O)Br)Br)O)Br)C(=O)O

Pricing & Availability
Specifications

PubChem CID	25113599
CAS	68988-92-1
Molecular Weight (g/mol)	933.304
MDL Number	MFCD00082143
SMILES	CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.C1=CC=C(C(=C1)C2=C3C=C(C(=C(C3=[O+]C4=C(C(=C(C=C24)Br)O)Br)Br)O)Br)C(=O)O
IUPAC Name	[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-10-ium-9-yl)benzoic acid
InChI Key	AXIKDPDWFVPGOD-UHFFFAOYSA-O
Molecular Formula	C36H27Br4N3O5S+2

1,368

Acid Red 94, TCI America™

CAS: 632-69-9 Molecular Formula: C20H4Cl4I4Na2O5 Molecular Weight (g/mol): 1019.644 MDL Number: MFCD00151169 InChI Key: DPBQSRZQYAYDGY-UHFFFAOYSA-N Synonym: Rose Bengal PubChem CID: 87244310 IUPAC Name: sodium;4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one SMILES: C1=C2C(=C(C(=C1I)O)I)OC3=C(C(=C(C=C3C24C5=C(C(=C(C(=C5Cl)Cl)Cl)Cl)C(=O)O4)I)O)I.[Na].[Na]

Pricing & Availability
Specifications

PubChem CID	87244310
CAS	632-69-9
Molecular Weight (g/mol)	1019.644
MDL Number	MFCD00151169
SMILES	C1=C2C(=C(C(=C1I)O)I)OC3=C(C(=C(C=C3C24C5=C(C(=C(C(=C5Cl)Cl)Cl)Cl)C(=O)O4)I)O)I.[Na].[Na]
Synonym	Rose Bengal
IUPAC Name	sodium;4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one
InChI Key	DPBQSRZQYAYDGY-UHFFFAOYSA-N
Molecular Formula	C20H4Cl4I4Na2O5

1,369

Phenol Red Indicator, 0.5% (w/v), Ricca Chemical

CAS: 34487-61-1 Molecular Formula: C19H13NaO5S Molecular Weight (g/mol): Mixture InChI Key: HKHYOKBQJILTEI-UHFFFAOYSA-M PubChem CID: 23686673 IUPAC Name: sodium;4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenolate SMILES: C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC=C(C=C3)O)C4=CC=C(C=C4)[O-].[Na+]

Pricing & Availability
Specifications

PubChem CID	23686673
CAS	34487-61-1
Molecular Weight (g/mol)	Mixture
SMILES	C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC=C(C=C3)O)C4=CC=C(C=C4)[O-].[Na+]
IUPAC Name	sodium;4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenolate
InChI Key	HKHYOKBQJILTEI-UHFFFAOYSA-M
Molecular Formula	C19H13NaO5S

1,370

Xylenol Orange Indicator, 0.1% (w/v), Ricca Chemical

CAS: 3618-43-7 Molecular Formula: C₃₁H₂₈N₂Na₄O₁₃S

Pricing & Availability
Specifications

CAS	3618-43-7
Molecular Formula	C₃₁H₂₈N₂Na₄O₁₃S

1,371

Eriochrome Black T, ACS Reagent Grade, Ricca Chemical

CAS: 1787-61-7 Molecular Formula: C20H12N3NaO7S Molecular Weight (g/mol): 461.38 MDL Number: MFCD00003935 InChI Key: JHUJLRKQZAPSDP-GXTSIBQPSA-M PubChem CID: 87355429 IUPAC Name: sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate SMILES: [Na+].OC1=C2C=CC=CC2=CC=C1N\N=C1/C(=O)C=C(C2=CC(=CC=C12)[N+]([O-])=O)S([O-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	87355429
CAS	1787-61-7
Molecular Weight (g/mol)	461.38
MDL Number	MFCD00003935
SMILES	[Na+].OC1=C2C=CC=CC2=CC=C1N\N=C1/C(=O)C=C(C2=CC(=CC=C12)[N+]([O-])=O)S([O-])(=O)=O
IUPAC Name	sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate
InChI Key	JHUJLRKQZAPSDP-GXTSIBQPSA-M
Molecular Formula	C20H12N3NaO7S

1,372

Calcein Blue 98.0+%, TCI America™

CAS: 54375-47-2 Molecular Formula: C15H15NO7 Molecular Weight (g/mol): 321.285 MDL Number: MFCD00006867 InChI Key: RJPSHDMGSVVHFA-UHFFFAOYSA-N Synonym: 4-Methylumbelliferonemethyleneiminodiacetic Acid, Umbelliferone Complexon PubChem CID: 5393133 IUPAC Name: 2-[carboxymethyl-[(7-hydroxy-4-methyl-2-oxochromen-8-yl)methyl]amino]acetic acid SMILES: CC1=CC(=O)OC2=C1C=CC(=C2CN(CC(=O)O)CC(=O)O)O

Pricing & Availability
Specifications

PubChem CID	5393133
CAS	54375-47-2
Molecular Weight (g/mol)	321.285
MDL Number	MFCD00006867
SMILES	CC1=CC(=O)OC2=C1C=CC(=C2CN(CC(=O)O)CC(=O)O)O
Synonym	4-Methylumbelliferonemethyleneiminodiacetic Acid, Umbelliferone Complexon
IUPAC Name	2-[carboxymethyl-[(7-hydroxy-4-methyl-2-oxochromen-8-yl)methyl]amino]acetic acid
InChI Key	RJPSHDMGSVVHFA-UHFFFAOYSA-N
Molecular Formula	C15H15NO7

1,373

Crocein Scarlet 3B, TCI America™

CAS: 5413-75-2 Molecular Formula: C22H16N4Na2O7S2 Molecular Weight (g/mol): 558.491 MDL Number: MFCD00003907 InChI Key: BMBHMIGLJQAUTJ-HKWNQDJZSA-N Synonym: Acid Red 73 PubChem CID: 88641610 IUPAC Name: (8Z)-7-oxo-8-[(4-phenyldiazenylphenyl)hydrazinylidene]naphthalene-1,3-disulfonic acid;sodium SMILES: C1=CC=C(C=C1)N=NC2=CC=C(C=C2)NN=C3C(=O)C=CC4=CC(=CC(=C43)S(=O)(=O)O)S(=O)(=O)O.[Na].[Na]

Pricing & Availability
Specifications

PubChem CID	88641610
CAS	5413-75-2
Molecular Weight (g/mol)	558.491
MDL Number	MFCD00003907
SMILES	C1=CC=C(C=C1)N=NC2=CC=C(C=C2)NN=C3C(=O)C=CC4=CC(=CC(=C43)S(=O)(=O)O)S(=O)(=O)O.[Na].[Na]
Synonym	Acid Red 73
IUPAC Name	(8Z)-7-oxo-8-[(4-phenyldiazenylphenyl)hydrazinylidene]naphthalene-1,3-disulfonic acid;sodium
InChI Key	BMBHMIGLJQAUTJ-HKWNQDJZSA-N
Molecular Formula	C22H16N4Na2O7S2

1,374

Eosin Y Stain, 0.25% (w/v) in 57% (v/v) Alcohol, Acidified Working Solution, Ricca Chemical

Pricing & Availability
Specifications

Name Note	Acidified Working Solution
Percent Purity	0.25% W/V
CAS	64-19-7
Color	Orange/Red
Physical Form	Liquid
pH	4.65
Packaging	Natural Poly Bottle
CAS Min %	0.5
Chemical Name or Material	Eosin Y Stain
Grade	Indicator
Concentration	0.25% (w/v)
Solvent or Matrix	57% (v/v) Alcohol
CAS Max %	0.52

1,375

Eosin Y Stain, 1% (w/v) Alcoholic Stock Solution, Ricca Chemical

Pricing & Availability
Specifications

Percent Purity	1% W/V
CAS	67-56-1
Color	Green
Packaging	Natural Poly Bottle
CAS Min %	1.21
Grade	Indicator
CAS Max %	1.26

1,376

Eriochrome Black T Indicator, 1% (w/w) in Sodium Chloride, Ricca Chemical

CAS: 1787-61-7 Molecular Formula: C20H12N3NaO7S Molecular Weight (g/mol): Mixture MDL Number: MFCD00003935 InChI Key: JHUJLRKQZAPSDP-GXTSIBQPSA-M PubChem CID: 87355429 IUPAC Name: sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate SMILES: [Na+].OC1=C2C=CC=CC2=CC=C1N\N=C1/C(=O)C=C(C2=CC(=CC=C12)[N+]([O-])=O)S([O-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	87355429
CAS	1787-61-7
Molecular Weight (g/mol)	Mixture
MDL Number	MFCD00003935
SMILES	[Na+].OC1=C2C=CC=CC2=CC=C1N\N=C1/C(=O)C=C(C2=CC(=CC=C12)[N+]([O-])=O)S([O-])(=O)=O
IUPAC Name	sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazin-1-ylidene]-7-nitro-3-oxo-3,4-dihydronaphthalene-1-sulfonate
InChI Key	JHUJLRKQZAPSDP-GXTSIBQPSA-M
Molecular Formula	C20H12N3NaO7S

1,377

Chlorazol Black E, TCI America™

CAS: 1937-37-7 Molecular Formula: C34H25N9Na2O7S2 Molecular Weight (g/mol): 781.73 MDL Number: MFCD00066363 InChI Key: OLVNAWLXZDRGPL-UHFFFAOYSA-L Synonym: Direct Black 38 PubChem CID: 44135447 IUPAC Name: disodium;4-amino-3-[[4-[4-[(2,4-diaminophenyl)diazenyl]phenyl]phenyl]diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate SMILES: C1=CC=C(C=C1)NN=C2C(=CC3=CC(=C(C(=C3C2=O)N)N=NC4=CC=C(C=C4)C5=CC=C(C=C5)N=NC6=C(C=C(C=C6)N)N)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	44135447
CAS	1937-37-7
Molecular Weight (g/mol)	781.73
MDL Number	MFCD00066363
SMILES	C1=CC=C(C=C1)NN=C2C(=CC3=CC(=C(C(=C3C2=O)N)N=NC4=CC=C(C=C4)C5=CC=C(C=C5)N=NC6=C(C=C(C=C6)N)N)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
Synonym	Direct Black 38
IUPAC Name	disodium;4-amino-3-[[4-[4-[(2,4-diaminophenyl)diazenyl]phenyl]phenyl]diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate
InChI Key	OLVNAWLXZDRGPL-UHFFFAOYSA-L
Molecular Formula	C34H25N9Na2O7S2

1,378

Pigment Red 4, TCI America™

CAS: 2814-77-9 Molecular Formula: C16H10ClN3O3 Molecular Weight (g/mol): 327.724 MDL Number: MFCD00059095 InChI Key: WJJZURXPOSMHKT-MNDPQUGUSA-N Synonym: Permanent Red 2B PubChem CID: 5720319 IUPAC Name: (1Z)-1-[(2-chloro-4-nitrophenyl)hydrazinylidene]naphthalen-2-one SMILES: C1=CC=C2C(=C1)C=CC(=O)C2=NNC3=C(C=C(C=C3)[N+](=O)[O-])Cl

Pricing & Availability
Specifications

PubChem CID	5720319
CAS	2814-77-9
Molecular Weight (g/mol)	327.724
MDL Number	MFCD00059095
SMILES	C1=CC=C2C(=C1)C=CC(=O)C2=NNC3=C(C=C(C=C3)[N+](=O)[O-])Cl
Synonym	Permanent Red 2B
IUPAC Name	(1Z)-1-[(2-chloro-4-nitrophenyl)hydrazinylidene]naphthalen-2-one
InChI Key	WJJZURXPOSMHKT-MNDPQUGUSA-N
Molecular Formula	C16H10ClN3O3

1,379

Bromocresol Green-Methyl Red TS, Ricca Chemical

Pricing & Availability
Specifications

Name Note	Test Solution
CAS	63451-28-5
Color	Red
Physical Form	Liquid
Packaging	Natural Poly Bottle
CAS Min %	0.06
Chemical Name or Material	Bromocresol Green-Methyl Red
Grade	Indicator
CAS Max %	0.06

1,380

StatLab Poly Scientific Azure B Counterstain For Melanin Pigment

Used to differentiate between melanin and chromogenic precipitates

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Stains and Dyes

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