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.

301 – 315 of 6,411 results

301

MilliporeSigma™ Weigert's Iron Hematoxylin kit

For staining nuclei of tissue sections

Pricing & Availability

302

Thermo Scientific Chemicals Thymol Blue, pure, indicator

CAS: 76-61-9 Molecular Formula: C27H30O5S Molecular Weight (g/mol): 466.592 MDL Number: MFCD00005869 InChI Key: PRZSXZWFJHEZBJ-UHFFFAOYSA-N Synonym: TB,Thymolsulfonephthalein PubChem CID: 65565 IUPAC Name: 4-[3-(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-5-methyl-2-propan-2-ylphenol SMILES: CC1=CC(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4C)O)C(C)C)C(C)C)O

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Specifications

PubChem CID	65565
CAS	76-61-9
Molecular Weight (g/mol)	466.592
MDL Number	MFCD00005869
SMILES	CC1=CC(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4C)O)C(C)C)C(C)C)O
Synonym	TB,Thymolsulfonephthalein
IUPAC Name	4-[3-(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-5-methyl-2-propan-2-ylphenol
InChI Key	PRZSXZWFJHEZBJ-UHFFFAOYSA-N
Molecular Formula	C27H30O5S

303

Thermo Scientific Chemicals Aniline Blue, sodium salt, pure, water soluble, high purity biological stain

CAS: 28983-56-4 Molecular Formula: C37H26N3Na2O9S3 Molecular Weight (g/mol): 798.79 MDL Number: MFCD00058509 InChI Key: TUHAIJABPUJAEY-UHFFFAOYSA-K Synonym: Acid Blue 22,C.I. 42755 PubChem CID: 76956083 IUPAC Name: disodium;4-[4-[[4-(4-sulfoanilino)phenyl]-[4-(4-sulfonatophenyl)azaniumylidenecyclohexa-2,5-dien-1-ylidene]methyl]anilino]benzenesulfonate SMILES: [Na+].[Na+].[O-]S(=O)(=O)C1=CC=CC=C1NC1=CC=C(C=C1)C(C1=CC=C(NC2=CC=CC=C2S([O-])(=O)=O)C=C1)=C1C=CC(C=C1)=NC1=CC=CC=C1S([O-])(=O)=O

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Specifications

PubChem CID	76956083
CAS	28983-56-4
Molecular Weight (g/mol)	798.79
MDL Number	MFCD00058509
SMILES	[Na+].[Na+].[O-]S(=O)(=O)C1=CC=CC=C1NC1=CC=C(C=C1)C(C1=CC=C(NC2=CC=CC=C2S([O-])(=O)=O)C=C1)=C1C=CC(C=C1)=NC1=CC=CC=C1S([O-])(=O)=O
Synonym	Acid Blue 22,C.I. 42755
IUPAC Name	disodium;4-[4-[[4-(4-sulfoanilino)phenyl]-[4-(4-sulfonatophenyl)azaniumylidenecyclohexa-2,5-dien-1-ylidene]methyl]anilino]benzenesulfonate
InChI Key	TUHAIJABPUJAEY-UHFFFAOYSA-K
Molecular Formula	C37H26N3Na2O9S3

304

Dansyl chloride, 98%

CAS: 605-65-2 Molecular Formula: C12H12ClNO2S Molecular Weight (g/mol): 269.74 MDL Number: MFCD00003985 InChI Key: XPDXVDYUQZHFPV-UHFFFAOYSA-N Synonym: 5-Dimethylamino-1-naphthalenesulfonyl chloride PubChem CID: 11801 ChEBI: CHEBI:51907 IUPAC Name: 5-(dimethylamino)naphthalene-1-sulfonyl chloride SMILES: CN(C)C1=CC=CC2=C(C=CC=C12)S(Cl)(=O)=O

Pricing & Availability
Specifications

PubChem CID	11801
CAS	605-65-2
Molecular Weight (g/mol)	269.74
ChEBI	CHEBI:51907
MDL Number	MFCD00003985
SMILES	CN(C)C1=CC=CC2=C(C=CC=C12)S(Cl)(=O)=O
Synonym	5-Dimethylamino-1-naphthalenesulfonyl chloride
IUPAC Name	5-(dimethylamino)naphthalene-1-sulfonyl chloride
InChI Key	XPDXVDYUQZHFPV-UHFFFAOYSA-N
Molecular Formula	C12H12ClNO2S

305

Thermo Scientific Chemicals Methyl Red, sodium salt, ACS reagent

CAS: 845-10-3 Molecular Formula: C15H14N3NaO2 Molecular Weight (g/mol): 291.286 MDL Number: MFCD00002426 InChI Key: GNTPCYMJCJNRQB-UHFFFAOYSA-M Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid, sodium salt,C.I. 13020,MR PubChem CID: 4465632 IUPAC Name: sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate SMILES: CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]

Pricing & Availability
Specifications

PubChem CID	4465632
CAS	845-10-3
Molecular Weight (g/mol)	291.286
MDL Number	MFCD00002426
SMILES	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]
Synonym	2-[4-(Dimethylamino)phenylazo]benzoic acid, sodium salt,C.I. 13020,MR
IUPAC Name	sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate
InChI Key	GNTPCYMJCJNRQB-UHFFFAOYSA-M
Molecular Formula	C15H14N3NaO2

306

Thermo Scientific Chemicals Bromophenol Blue sodium salt, ACS reagent

CAS: 34725-61-6 Molecular Formula: C19H9Br4NaO5S Molecular Weight (g/mol): 691.94 MDL Number: MFCD00013793 InChI Key: KGANHHDZDYZJEM-UHFFFAOYNA-M Synonym: 3',3'',5',5''-Tetrabromophenolsulfonephthalein PubChem CID: 3791690 IUPAC Name: sodium;2-[(3,5-dibromo-4-hydroxyphenyl)-(3,5-dibromo-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate

Pricing & Availability
Specifications

PubChem CID	3791690
CAS	34725-61-6
Molecular Weight (g/mol)	691.94
MDL Number	MFCD00013793
Synonym	3',3'',5',5''-Tetrabromophenolsulfonephthalein
IUPAC Name	sodium;2-[(3,5-dibromo-4-hydroxyphenyl)-(3,5-dibromo-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]benzenesulfonate
InChI Key	KGANHHDZDYZJEM-UHFFFAOYNA-M
Molecular Formula	C19H9Br4NaO5S

307

Thermo Scientific Chemicals o-Cresolphthalein Complexone, pure

CAS: 2411-89-4 Molecular Formula: C32H32N2O12 Molecular Weight (g/mol): 636.61 MDL Number: MFCD00005911 InChI Key: IYZPEGVSBUNMBE-UHFFFAOYSA-N Synonym: o-Cresolphthalexon,Phthalein Complexon PubChem CID: 75485 IUPAC Name: 2-[({5-[1-(3-{[bis(carboxymethyl)amino]methyl}-4-hydroxy-5-methylphenyl)-3-oxo-1,3-dihydro-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl}methyl)(carboxymethyl)amino]acetic acid SMILES: CC1=CC(=CC(CN(CC(O)=O)CC(O)=O)=C1O)C1(OC(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(CN(CC(O)=O)CC(O)=O)=C1

Pricing & Availability
Specifications

PubChem CID	75485
CAS	2411-89-4
Molecular Weight (g/mol)	636.61
MDL Number	MFCD00005911
SMILES	CC1=CC(=CC(CN(CC(O)=O)CC(O)=O)=C1O)C1(OC(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(CN(CC(O)=O)CC(O)=O)=C1
Synonym	o-Cresolphthalexon,Phthalein Complexon
IUPAC Name	2-[({5-[1-(3-{[bis(carboxymethyl)amino]methyl}-4-hydroxy-5-methylphenyl)-3-oxo-1,3-dihydro-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl}methyl)(carboxymethyl)amino]acetic acid
InChI Key	IYZPEGVSBUNMBE-UHFFFAOYSA-N
Molecular Formula	C32H32N2O12

308

Thermo Scientific Chemicals Methylthymol Blue sodium salt

CAS: 1945-77-3 Molecular Formula: C37H44N2Na4O13S Molecular Weight (g/mol): 848.779 MDL Number: MFCD00148905 InChI Key: LGVVZVZPOQJZKT-UHFFFAOYSA-N Synonym: Methylthymol Blue, water soluble PubChem CID: 131850582 IUPAC Name: 2-[[5-[3-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-2-methyl-5-propan-2-ylphenyl]-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-2-hydroxy-6-methyl-3-propan-2-ylphenyl]methyl-(carboxymethyl)amino]acetic acid;sodium SMILES: CC1=C(C(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4C)CN(CC(=O)O)CC(=O)O)O)C(C)C)C(C)C)O)CN(CC(=O)O)CC(=O)O.[Na].[Na].[Na].[Na]

Pricing & Availability
Specifications

PubChem CID	131850582
CAS	1945-77-3
Molecular Weight (g/mol)	848.779
MDL Number	MFCD00148905
SMILES	CC1=C(C(=C(C=C1C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4C)CN(CC(=O)O)CC(=O)O)O)C(C)C)C(C)C)O)CN(CC(=O)O)CC(=O)O.[Na].[Na].[Na].[Na]
Synonym	Methylthymol Blue, water soluble
IUPAC Name	2-[[5-[3-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-2-methyl-5-propan-2-ylphenyl]-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-2-hydroxy-6-methyl-3-propan-2-ylphenyl]methyl-(carboxymethyl)amino]acetic acid;sodium
InChI Key	LGVVZVZPOQJZKT-UHFFFAOYSA-N
Molecular Formula	C37H44N2Na4O13S

309

Hydroxy Naphthol Blue, ACS Reagent Grade, Ricca Chemical

CAS: 165660-27-5 Molecular Formula: C20H14N2Na2O11S3 Molecular Weight (g/mol): Mixture InChI Key: LXJHFXHZWYBBKJ-LUUCHEBKSA-N PubChem CID: 131849366 IUPAC Name: 3-hydroxy-4-[(2Z)-2-(2-oxo-4-sulfonaphthalen-1-ylidene)hydrazinyl]naphthalene-2,7-disulfonic acid;sodium SMILES: C1=CC=C2C(=C1)C(=CC(=O)C2=NNC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)O)S(=O)(=O)O)S(=O)(=O)O.[Na].[Na]

Pricing & Availability
Specifications

PubChem CID	131849366
CAS	165660-27-5
Molecular Weight (g/mol)	Mixture
SMILES	C1=CC=C2C(=C1)C(=CC(=O)C2=NNC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)O)S(=O)(=O)O)S(=O)(=O)O.[Na].[Na]
IUPAC Name	3-hydroxy-4-[(2Z)-2-(2-oxo-4-sulfonaphthalen-1-ylidene)hydrazinyl]naphthalene-2,7-disulfonic acid;sodium
InChI Key	LXJHFXHZWYBBKJ-LUUCHEBKSA-N
Molecular Formula	C20H14N2Na2O11S3

310

BD Fixable Viability Stain 450

Useful to discriminate viable from non-viable mammalian cells in multicolor flow cytometric application

Pricing & Availability

311

Thermo Scientific Chemicals Bromophenol Blue, pure, indicator

CAS: 115-39-9 Molecular Formula: C19H10Br4O5S Molecular Weight (g/mol): 669.96 MDL Number: MFCD00005875 InChI Key: UDSAIICHUKSCKT-UHFFFAOYSA-N Synonym: 3',3'',5',5''-Tetrabromophenolsulfonephthalein,BPB,3', 3'', 5' PubChem CID: 8272 ChEBI: CHEBI:59424 IUPAC Name: 2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenol SMILES: C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C(=C3)Br)O)Br)C4=CC(=C(C(=C4)Br)O)Br

Pricing & Availability
Specifications

PubChem CID	8272
CAS	115-39-9
Molecular Weight (g/mol)	669.96
ChEBI	CHEBI:59424
MDL Number	MFCD00005875
SMILES	C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C(=C3)Br)O)Br)C4=CC(=C(C(=C4)Br)O)Br
Synonym	3',3'',5',5''-Tetrabromophenolsulfonephthalein,BPB,3', 3'', 5'
IUPAC Name	2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenol
InChI Key	UDSAIICHUKSCKT-UHFFFAOYSA-N
Molecular Formula	C19H10Br4O5S

312

Methyl Viologen hydrate, 98%

CAS: 75365-73-0 Molecular Formula: C12H14Cl2N2 Molecular Weight (g/mol): 257.16 MDL Number: MFCD00150001 InChI Key: FIKAKWIAUPDISJ-UHFFFAOYSA-L Synonym: Paraquat, dichloride PubChem CID: 15938 ChEBI: CHEBI:28786 IUPAC Name: 1-methyl-4-(1-methylpyridin-1-ium-4-yl)pyridin-1-ium;dichloride SMILES: [Cl-].[Cl-].C[N+]1=CC=C(C=C1)C1=CC=[N+](C)C=C1

Pricing & Availability
Specifications

PubChem CID	15938
CAS	75365-73-0
Molecular Weight (g/mol)	257.16
ChEBI	CHEBI:28786
MDL Number	MFCD00150001
SMILES	[Cl-].[Cl-].C[N+]1=CC=C(C=C1)C1=CC=[N+](C)C=C1
Synonym	Paraquat, dichloride
IUPAC Name	1-methyl-4-(1-methylpyridin-1-ium-4-yl)pyridin-1-ium;dichloride
InChI Key	FIKAKWIAUPDISJ-UHFFFAOYSA-L
Molecular Formula	C12H14Cl2N2

313

Thermo Scientific Chemicals Fluorescein, pure

CAS: 2321-07-5 Molecular Formula: C20H12O5 Molecular Weight (g/mol): 332.31 MDL Number: MFCD00005050 InChI Key: GNBHRKFJIUUOQI-UHFFFAOYSA-N PubChem CID: 16850 ChEBI: CHEBI:31624 IUPAC Name: 3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one SMILES: C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O

Pricing & Availability
Specifications

PubChem CID	16850
CAS	2321-07-5
Molecular Weight (g/mol)	332.31
ChEBI	CHEBI:31624
MDL Number	MFCD00005050
SMILES	C1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O
IUPAC Name	3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
InChI Key	GNBHRKFJIUUOQI-UHFFFAOYSA-N
Molecular Formula	C20H12O5

314

Phloxine B, Certified, 85%, Thermo Scientific™

CAS: 18472-87-2 Molecular Formula: C20 H2 Br4 Cl4 Na2 O5 MDL Number: MFCD00005061 Synonym: Acid Red 92,C.I. 45410

Pricing & Availability
Specifications

CAS	18472-87-2
MDL Number	MFCD00005061
Synonym	Acid Red 92,C.I. 45410
Molecular Formula	C20 H2 Br4 Cl4 Na2 O5

315

Thermo Scientific Chemicals Methyl Purple, 0.1% w/v aq. soln.

Transition interval: pH 4.8 (purple) to pH 5.4 (green) | CAS: 1340-02-9

Pricing & Availability
Specifications

Concentration or Composition (by Analyte or Components)	Methyl purple: 0.1%; Water: 99.9%
CAS	7732-18-5
MDL Number	MFCD00070843
Physical Form	Liquid
Chemical Name or Material	Methyl Purple
TSCA	No
Recommended Storage	Ambient temperatures
Vapor Pressure	23 hPa (17mm Hg) at 20°C
Assay Percent Range	0.1% w/v aqueous solution

Stains and Dyes

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Hydroxy Naphthol Blue, ACS Reagent Grade, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Hydroxy Naphthol Blue, ACS Reagent Grade, Ricca Chemical