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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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Ponceau S, Electrophoresis Grade

CAS: 6226-79-5 Molecular Formula: C22H12N4Na4O13S4 Molecular Weight (g/mol): 760.552 MDL Number: MFCD00003892 InChI Key: VSXKEUCERCWGKF-STNZDNLRSA-J Synonym: C.I. 27195 PubChem CID: 11320219 IUPAC Name: tetrasodium;(4Z)-3-oxo-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2,7-disulfonate SMILES: C1=CC(=CC=C1N=NC2=CC(=C(C=C2)NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]

EDGE
PubChem CID 11320219
CAS 6226-79-5
Molecular Weight (g/mol) 760.552
MDL Number MFCD00003892
SMILES C1=CC(=CC=C1N=NC2=CC(=C(C=C2)NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
Synonym C.I. 27195
IUPAC Name tetrasodium;(4Z)-3-oxo-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2,7-disulfonate
InChI Key VSXKEUCERCWGKF-STNZDNLRSA-J
Molecular Formula C22H12N4Na4O13S4
2

Thermo Scientific Chemicals Alcian Blue 8GX

CAS: 33864-99-2 Molecular Formula: C56H68Cl4CuN16S4 Molecular Weight (g/mol): 1298.86 MDL Number: MFCD00010720 InChI Key: XRWQTDIELZDCPS-UHFFFAOYSA-J Synonym: Ingrain blue 1; C.I. 74240 PubChem CID: 17749099 IUPAC Name: (9Z,18Z,26Z,35Z)-4,14,22,32-tetrakis({[(dimethylamino)(dimethyliminiumyl)methyl]sulfanyl}methyl)-9,18,27,36,37,39,40,41-octaaza-38-cupradecacyclo[17.17.3.1¹⁰,¹⁷.1²⁸,³⁵.0²,⁷.0⁸,³⁷.0¹¹,¹⁶.0²⁰,²⁵.0²⁶,³⁹.0²⁹,³⁴]hentetraconta-1,3,5,7,9,11(16),12,14,17(41),18,20,22,24,26,28(40),29(34),30,32,35-nonadecaene-38,38-bis(ylium) tetrachloride SMILES: [Cl-].[Cl-].[Cl-].[Cl-].CN(C)C(SCC1=CC2=C(C=C1)\C1=N\C3=C4C=CC(CSC(N(C)C)=[N+](C)C)=CC4=C4\N=C5/N=C(/N=C6\N([Cu++]N34)\C(=N/C2=N1)C1=CC(CSC(N(C)C)=[N+](C)C)=CC=C61)C1=C5C=C(CSC(N(C)C)=[N+](C)C)C=C1)=[N+](C)C

EDGE
PubChem CID 17749099
CAS 33864-99-2
Molecular Weight (g/mol) 1298.86
MDL Number MFCD00010720
SMILES [Cl-].[Cl-].[Cl-].[Cl-].CN(C)C(SCC1=CC2=C(C=C1)\C1=N\C3=C4C=CC(CSC(N(C)C)=[N+](C)C)=CC4=C4\N=C5/N=C(/N=C6\N([Cu++]N34)\C(=N/C2=N1)C1=CC(CSC(N(C)C)=[N+](C)C)=CC=C61)C1=C5C=C(CSC(N(C)C)=[N+](C)C)C=C1)=[N+](C)C
Synonym Ingrain blue 1; C.I. 74240
IUPAC Name (9Z,18Z,26Z,35Z)-4,14,22,32-tetrakis({[(dimethylamino)(dimethyliminiumyl)methyl]sulfanyl}methyl)-9,18,27,36,37,39,40,41-octaaza-38-cupradecacyclo[17.17.3.1¹⁰,¹⁷.1²⁸,³⁵.0²,⁷.0⁸,³⁷.0¹¹,¹⁶.0²⁰,²⁵.0²⁶,³⁹.0²⁹,³⁴]hentetraconta-1,3,5,7,9,11(16),12,14,17(41),18,20,22,24,26,28(40),29(34),30,32,35-nonadecaene-38,38-bis(ylium) tetrachloride
InChI Key XRWQTDIELZDCPS-UHFFFAOYSA-J
Molecular Formula C56H68Cl4CuN16S4
3

Thermo Scientific Chemicals Ponceau S, pure

CAS: 6226-79-5 Molecular Formula: C22H12N4Na4O13S4 Molecular Weight (g/mol): 760.552 MDL Number: MFCD00003892 InChI Key: VSXKEUCERCWGKF-STNZDNLRSA-J Synonym: C.I. 27195,3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2, 7-naphthalenedisulfonic acid, tetrasodium salt PubChem CID: 11320219 IUPAC Name: tetrasodium;(4Z)-3-oxo-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2,7-disulfonate SMILES: C1=CC(=CC=C1N=NC2=CC(=C(C=C2)NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]

EDGE
PubChem CID 11320219
CAS 6226-79-5
Molecular Weight (g/mol) 760.552
MDL Number MFCD00003892
SMILES C1=CC(=CC=C1N=NC2=CC(=C(C=C2)NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
Synonym C.I. 27195,3-Hydroxy-4-[2-sulfo-4-(4-sulfophenylazo)phenylazo]-2, 7-naphthalenedisulfonic acid, tetrasodium salt
IUPAC Name tetrasodium;(4Z)-3-oxo-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2,7-disulfonate
InChI Key VSXKEUCERCWGKF-STNZDNLRSA-J
Molecular Formula C22H12N4Na4O13S4
4

Orange G/blue loading dye (6X)

Physical Form Liquid
Solubility Information Not miscible in water.
Chemical Name or Material Orange G/blue loading dye
TSCA No
Recommended Storage Ambient temperatures
Concentration 6X
5

Thermo Scientific Chemicals Brilliant Blue G soln., Ready-to-Use

CAS: 6104-58-1 Molecular Formula: C47H48N3NaO7S2 Molecular Weight (g/mol): 854.025 MDL Number: MFCD00078482 InChI Key: RWVGQQGBQSJDQV-UHFFFAOYSA-M Synonym: Coomassie Brilliant Blue G; C.I. 42655 PubChem CID: 6328534 IUPAC Name: sodium;3-[[4-[(Z)-[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]methyl]-N-ethyl-3-methylanilino]methyl]benzenesulfonate SMILES: CCN(CC1=CC(=CC=C1)S(=O)(=O)[O-])C2=CC(=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)[O-])C=C3C)C5=CC=C(C=C5)NC6=CC=C(C=C6)OCC)C.[Na+]

PubChem CID 6328534
CAS 6104-58-1
Molecular Weight (g/mol) 854.025
MDL Number MFCD00078482
SMILES CCN(CC1=CC(=CC=C1)S(=O)(=O)[O-])C2=CC(=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)[O-])C=C3C)C5=CC=C(C=C5)NC6=CC=C(C=C6)OCC)C.[Na+]
Synonym Coomassie Brilliant Blue G; C.I. 42655
IUPAC Name sodium;3-[[4-[(Z)-[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]methyl]-N-ethyl-3-methylanilino]methyl]benzenesulfonate
InChI Key RWVGQQGBQSJDQV-UHFFFAOYSA-M
Molecular Formula C47H48N3NaO7S2
6

Thermo Scientific Chemicals Nuclear Fast Red Soln., enhanced stability

Health Hazard 3 P280-P305+P351+P338-P310
Physical Form Liquid
Packaging Plastic bottle
Health Hazard 1 H318
Chemical Name or Material Nuclear Fast Red Soln.
Synonym Kernechtrot Solution
TSCA Yes
Recommended Storage Ambient temperatures
7

Orange G loading dye (6X), glycerol based

Name Note glycerol based
Health Hazard 3 GHS P Statement
P280-P264-P305+P351+P338-P337+P313
Wear protective gloves/protective clothing/eye protection/face protection.
Wash thoroughly after handling.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
If eye irritation persists: Get medical advice/attention.
Color Orange
Health Hazard 2 GHS H Statement
H319
Causes serious eye irritation.
Physical Form Liquid
Solubility Information Soluble in water.
Health Hazard 1 Warning
Chemical Name or Material Orange G loading dye
TSCA Yes
Recommended Storage Keep cold
Concentration 6X
9

Thermo Scientific Chemicals Amido Black 10B, 0.2% v/v soln. in 5% acetic acid

CAS: 1064-48-8 Molecular Formula: C22H14N6Na2O9S2 Molecular Weight (g/mol): 616.487 MDL Number: MFCD00004017 InChI Key: HKBVRFLHNUEVRO-UHFFFAOYSA-L Synonym: Acid black 1; C.I. 20470 PubChem CID: 44134531 IUPAC Name: disodium;4-amino-3-[(4-nitrophenyl)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)[N+](=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

PubChem CID 44134531
CAS 1064-48-8
Molecular Weight (g/mol) 616.487
MDL Number MFCD00004017
SMILES C1=CC=C(C=C1)NN=C2C(=CC3=CC(=C(C(=C3C2=O)N)N=NC4=CC=C(C=C4)[N+](=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
Synonym Acid black 1; C.I. 20470
IUPAC Name disodium;4-amino-3-[(4-nitrophenyl)diazenyl]-5-oxo-6-(phenylhydrazinylidene)naphthalene-2,7-disulfonate
InChI Key HKBVRFLHNUEVRO-UHFFFAOYSA-L
Molecular Formula C22H14N6Na2O9S2
10

o-Cresolphthalein Complexone Sodium Salt, Thermo Scientific Chemicals

CAS: 62698-54-8 Molecular Formula: C32H28N2Na4O12 Molecular Weight (g/mol): 724.54 MDL Number: MFCD00066371 InChI Key: KSMPPVYJZJBIES-UHFFFAOYSA-J PubChem CID: 112916 IUPAC Name: tetrasodium;2-[[5-[1-[3-[[bis(carboxylatomethyl)amino]methyl]-4-hydroxy-5-methylphenyl]-3-oxo-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl]methyl-(carboxylatomethyl)amino]acetate SMILES: [Na+].[Na+].[Na+].[Na+].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

PubChem CID 112916
CAS 62698-54-8
Molecular Weight (g/mol) 724.54
MDL Number MFCD00066371
SMILES [Na+].[Na+].[Na+].[Na+].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
IUPAC Name tetrasodium;2-[[5-[1-[3-[[bis(carboxylatomethyl)amino]methyl]-4-hydroxy-5-methylphenyl]-3-oxo-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl]methyl-(carboxylatomethyl)amino]acetate
InChI Key KSMPPVYJZJBIES-UHFFFAOYSA-J
Molecular Formula C32H28N2Na4O12
11

Brilliant Blue R soln., Ready-to-Use, Thermo Scientific Chemicals

CAS: 6104-59-2 Molecular Formula: C45H44N3NaO7S2 Molecular Weight (g/mol): 825.97 MDL Number: MFCD00041762 InChI Key: HAEGGLCXLFWTBE-UHFFFAOYSA-M Synonym: Coomassie Brilliant Blue R; C.I. 42660 PubChem CID: 61365 IUPAC Name: sodium;3-[[4-[[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-N-ethylanilino]methyl]benzenesulfonate SMILES: [Na+].CCOC1=CC=C(NC2=CC=C(C=C2)[C+](C2=CC=C(C=C2)N(CC)CC2=CC=CC(=C2)S([O-])(=O)=O)C2=CC=C(C=C2)N(CC)CC2=CC=CC(=C2)S([O-])(=O)=O)C=C1

PubChem CID 61365
CAS 6104-59-2
Molecular Weight (g/mol) 825.97
MDL Number MFCD00041762
SMILES [Na+].CCOC1=CC=C(NC2=CC=C(C=C2)[C+](C2=CC=C(C=C2)N(CC)CC2=CC=CC(=C2)S([O-])(=O)=O)C2=CC=C(C=C2)N(CC)CC2=CC=CC(=C2)S([O-])(=O)=O)C=C1
Synonym Coomassie Brilliant Blue R; C.I. 42660
IUPAC Name sodium;3-[[4-[[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-N-ethylanilino]methyl]benzenesulfonate
InChI Key HAEGGLCXLFWTBE-UHFFFAOYSA-M
Molecular Formula C45H44N3NaO7S2
12

Nigrosin, alcohol soluble

CAS: 11099-03-9 Molecular Formula: C8H19ClN2O Molecular Weight (g/mol): 194.703 MDL Number: MFCD00149005 InChI Key: GBPWTMZRCAESKB-UHFFFAOYSA-N Synonym: Solvent Black 5; C.I. 50415 PubChem CID: 19828004 IUPAC Name: 2-amino-N,N-dipropylacetamide;hydrochloride SMILES: CCCN(CCC)C(=O)CN.Cl

PubChem CID 19828004
CAS 11099-03-9
Molecular Weight (g/mol) 194.703
MDL Number MFCD00149005
SMILES CCCN(CCC)C(=O)CN.Cl
Synonym Solvent Black 5; C.I. 50415
IUPAC Name 2-amino-N,N-dipropylacetamide;hydrochloride
InChI Key GBPWTMZRCAESKB-UHFFFAOYSA-N
Molecular Formula C8H19ClN2O
15

Orange G, Electrophoresis Grade

CAS: 1936-15-8 Molecular Formula: C16H10N2Na2O7S2 Molecular Weight (g/mol): 452.36 MDL Number: MFCD00012457 InChI Key: AEOVEGJBKQQFOP-DDVLFWKVSA-L Synonym: C.I. 16230; Acid Orange 10 PubChem CID: 131850556 SMILES: [Na+].[Na+].[O-]S(=O)(=O)C1=CC2=C(\C(=N\NC3=CC=CC=C3)C(=O)C=C2)C(=C1)S([O-])(=O)=O

PubChem CID 131850556
CAS 1936-15-8
Molecular Weight (g/mol) 452.36
MDL Number MFCD00012457
SMILES [Na+].[Na+].[O-]S(=O)(=O)C1=CC2=C(\C(=N\NC3=CC=CC=C3)C(=O)C=C2)C(=C1)S([O-])(=O)=O
Synonym C.I. 16230; Acid Orange 10
InChI Key AEOVEGJBKQQFOP-DDVLFWKVSA-L
Molecular Formula C16H10N2Na2O7S2