Staining Reagents

Stains, staining systems, and blocking agents in a variety of types, grades, molecular weights, purities, and pH ranges; used to elucidate important structures of microorganisms including bacteria, viruses, protozoa, etc.

Stains and Dyes (9,044)

Tissue Stain Blocking Reagents (80)

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301 – 315 of 7,000 results

301

Bromocresol Green Indicator, 0.1% (w/v), Ricca Chemical

CAS: 62625-32-5

Pricing & Availability
Specifications

Percent Purity	0.1% W/V
CAS	7732-18-5
Color	Dark Blue
Physical Form	Liquid
pH	>5.4
Packaging	Natural Poly Bottle
CAS Min %	0.1
Chemical Name or Material	Bromocresol Green Indicator
Grade	Indicator
Concentration	0.1% (w/v)
Solvent or Matrix	Aqueous Solution
CAS Max %	0.1

302

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Thermo Scientific Chemicals Cresyl Violet acetate

CAS: 10510-54-0 Molecular Formula: C18H15N3O3 Molecular Weight (g/mol): 321.34 MDL Number: MFCD00013151,MFCD00013151 InChI Key: XKOCOMKJPWEOHX-UHFFFAOYSA-M Synonym: 9-Amino-5-imino-5H-benzo[a]phenoxazine acetate salt; Cresyl echt violet PubChem CID: 44134641 IUPAC Name: acetic acid;5-iminobenzo[a]phenoxazin-9-amine SMILES: CC([O-])=O.NC1=CC2=[O+]C3=C(N=C2C=C1)C1=CC=CC=C1C(N)=C3

Pricing & Availability
Specifications

PubChem CID	44134641
CAS	10510-54-0
Molecular Weight (g/mol)	321.34
MDL Number	MFCD00013151,MFCD00013151
SMILES	CC([O-])=O.NC1=CC2=[O+]C3=C(N=C2C=C1)C1=CC=CC=C1C(N)=C3
Synonym	9-Amino-5-imino-5H-benzo[a]phenoxazine acetate salt; Cresyl echt violet
IUPAC Name	acetic acid;5-iminobenzo[a]phenoxazin-9-amine
InChI Key	XKOCOMKJPWEOHX-UHFFFAOYSA-M
Molecular Formula	C18H15N3O3

303

Toluidine Blue Stain, 1% (w/v), Ricca Chemical

CAS: 92-31-9 Molecular Formula: C15H16ClN3S Molecular Weight (g/mol): Mixture MDL Number: MFCD00011934 InChI Key: HNONEKILPDHFOL-UHFFFAOYSA-M PubChem CID: 7083 IUPAC Name: 3-amino-7-(dimethylamino)-2-methyl-5λ4-phenothiazin-5-ylium chloride SMILES: [Cl-].CN(C)C1=CC=C2N=C3C=C(C)C(N)=CC3=[S+]C2=C1

Pricing & Availability
Specifications

PubChem CID	7083
CAS	92-31-9
Molecular Weight (g/mol)	Mixture
MDL Number	MFCD00011934
SMILES	[Cl-].CN(C)C1=CC=C2N=C3C=C(C)C(N)=CC3=[S+]C2=C1
IUPAC Name	3-amino-7-(dimethylamino)-2-methyl-5λ4-phenothiazin-5-ylium chloride
InChI Key	HNONEKILPDHFOL-UHFFFAOYSA-M
Molecular Formula	C15H16ClN3S

304

Congo Red, MP Biomedicals™

CAS: 573-58-0 Molecular Formula: C32H22N6Na2O6S2 Molecular Weight (g/mol): 696.664 InChI Key: IQFVPQOLBLOTPF-UHFFFAOYSA-L Synonym: Cotton Red,Benzo Congo Red PubChem CID: 11313 ChEBI: CHEBI:34653 IUPAC Name: disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate SMILES: C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	11313
CAS	573-58-0
Molecular Weight (g/mol)	696.664
ChEBI	CHEBI:34653
SMILES	C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+]
Synonym	Cotton Red,Benzo Congo Red
IUPAC Name	disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate
InChI Key	IQFVPQOLBLOTPF-UHFFFAOYSA-L
Molecular Formula	C32H22N6Na2O6S2

305

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Thermo Scientific Chemicals Eriochrome™ Black T, pure, indicator grade

CAS: 1787-61-7 Molecular Formula: C20H12N3NaO7S Molecular Weight (g/mol): 461.38 MDL Number: MFCD00003935 InChI Key: JHUJLRKQZAPSDP-GXTSIBQPSA-M Synonym: C.I. 14645,3-Hydroxy-4-(1-hydroxy-2-naphthylazo)-7-nitro-1-naphthalene sulfonic acid, sodium salt,Mordant Black 11 PubChem CID: 87355429 IUPAC Name: (4Z)-4-[(1-hydroxynaphthalen-2-yl)hydrazinylidene]-7-nitro-3-oxonaphthalene-1-sulfonic acid;sodium 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
Synonym	C.I. 14645,3-Hydroxy-4-(1-hydroxy-2-naphthylazo)-7-nitro-1-naphthalene sulfonic acid, sodium salt,Mordant Black 11
IUPAC Name	(4Z)-4-[(1-hydroxynaphthalen-2-yl)hydrazinylidene]-7-nitro-3-oxonaphthalene-1-sulfonic acid;sodium
InChI Key	JHUJLRKQZAPSDP-GXTSIBQPSA-M
Molecular Formula	C20H12N3NaO7S

306

Phenol Red, 0.5% Solution, MP Biomedicals

CAS: 34487-61-1 Molecular Formula: C19H13NaO5S Molecular Weight (g/mol): 376.358 MDL Number: MFCD00003552 InChI Key: HKHYOKBQJILTEI-UHFFFAOYSA-M Synonym: Phenolsulfonphthalein 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)	376.358
MDL Number	MFCD00003552
SMILES	C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC=C(C=C3)O)C4=CC=C(C=C4)[O-].[Na+]
Synonym	Phenolsulfonphthalein
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

307

Pyronin Y

CAS: 92-32-0 Molecular Formula: C17H19ClN2O Molecular Weight (g/mol): 302.802 MDL Number: MFCD00011725 InChI Key: INCIMLINXXICKS-UHFFFAOYSA-M Synonym: C.I. 45005; Pyronin G PubChem CID: 7085 ChEBI: CHEBI:87347 IUPAC Name: [6-(dimethylamino)xanthen-3-ylidene]-dimethylazanium;chloride SMILES: CN(C)C1=CC2=C(C=C1)C=C3C=CC(=[N+](C)C)C=C3O2.[Cl-]

Pricing & Availability
Specifications

PubChem CID	7085
CAS	92-32-0
Molecular Weight (g/mol)	302.802
ChEBI	CHEBI:87347
MDL Number	MFCD00011725
SMILES	CN(C)C1=CC2=C(C=C1)C=C3C=CC(=[N+](C)C)C=C3O2.[Cl-]
Synonym	C.I. 45005; Pyronin G
IUPAC Name	[6-(dimethylamino)xanthen-3-ylidene]-dimethylazanium;chloride
InChI Key	INCIMLINXXICKS-UHFFFAOYSA-M
Molecular Formula	C17H19ClN2O

308

Calmagite Indicator, 0.1% Aqueous, for Hardness, Certified, LabChem™

CAS: 3147-14-6 Molecular Formula: C17H14N2O5S Molecular Weight (g/mol): 358.368 InChI Key: ASFVMSDYPYMUFL-UHFFFAOYSA-N PubChem CID: 6364506 IUPAC Name: 4-[(2-hydroxy-5-methylphenyl)hydrazinylidene]-3-oxonaphthalene-1-sulfonic acid SMILES: CC1=CC(=C(C=C1)O)NN=C2C3=CC=CC=C3C(=CC2=O)S(=O)(=O)O

Pricing & Availability
Specifications

PubChem CID	6364506
CAS	3147-14-6
Molecular Weight (g/mol)	358.368
SMILES	CC1=CC(=C(C=C1)O)NN=C2C3=CC=CC=C3C(=CC2=O)S(=O)(=O)O
IUPAC Name	4-[(2-hydroxy-5-methylphenyl)hydrazinylidene]-3-oxonaphthalene-1-sulfonic acid
InChI Key	ASFVMSDYPYMUFL-UHFFFAOYSA-N
Molecular Formula	C17H14N2O5S

309

Dichlorofluorescein, 0.1% Alcoholic, Certified, LabChem™

401.2 g/mol

Pricing & Availability
Specifications

Linear Formula	C₂₀H₁₀Cl₂O₅
Color	Yellow
Physical Form	Liquid
Chemical Name or Material	Dichlorofluorescein
Grade	Certified
Identification	Passes Test
Name Note	0.1% Alcoholic
CAS	76-54-0
Health Hazard 3	GHS P Statement Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Keep away from heat, sparks, open flames, hot surfaces. No smoking. Keep container tightly closed. Ground/bond container and receiving equipment. Use explosion-proof electrical, ventilating, lighting equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Do not breathe mist, vapors, spray. Wear protective gloves, eye protection. Wash exposed skin thoroughly after handling. Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. If swallowed: Rinse mouth. Call a poison center/doctor if you feel unwell. If on skin (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. If skin irritation occurs: Get medical advice/attention. Wash contaminated clothing before reuse. If inhaled: Remove person to fresh air and keep comfortable for breathing. Call a poison center/doctor if you feel unwell. 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. In case of fire: Use carbon dioxide, powder, alcohol-resistant foam to extinguish. Store locked up in a cool, well-ventilated place. Dispose of contents/container to comply with local, state and federal regulations.
Decomposition Information	Hydrogen fluoride; Carbon monoxide; Carbon dioxide; Hydrogen chloride
Health Hazard 2	GHS H Statement Flammable liquid and vapor. Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Suspected of damaging fertility or the unborn child. Causes damage to organs (central nervous system, optic nerve) (oral).
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	401.2
CAS Max %	0.1
Suitability	Passes Test

310

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Thermo Scientific Chemicals Brilliant cresyl Blue, pure, high purity biological stain

CAS: 81029-05-2 Molecular Formula: ₀·5 ZnCl₄ MDL Number: MFCD00148902

Pricing & Availability
Specifications

CAS	81029-05-2
MDL Number	MFCD00148902
Molecular Formula	₀·5 ZnCl₄

311

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Thermo Scientific Chemicals Bromocresol Green, sodium salt, ACS reagent

CAS: 67763-24-0 Molecular Formula: C21H13Br4NaO5S Molecular Weight (g/mol): 720.00 MDL Number: MFCD00148898 InChI Key: HEFSGAHJDGZCHA-UHFFFAOYNA-M Synonym: 3',3'',5',5''-Tetrabromo-m-cresolsulfonephthalein sodium salt PubChem CID: 23675901 IUPAC Name: sodium;2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-3-methylphenolate SMILES: [Na+].CC1=C(Br)C(O)=C(Br)C=C1C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC(Br)=C([O-])C(Br)=C1C

Pricing & Availability
Specifications

PubChem CID	23675901
CAS	67763-24-0
Molecular Weight (g/mol)	720.00
MDL Number	MFCD00148898
SMILES	[Na+].CC1=C(Br)C(O)=C(Br)C=C1C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC(Br)=C([O-])C(Br)=C1C
Synonym	3',3'',5',5''-Tetrabromo-m-cresolsulfonephthalein sodium salt
IUPAC Name	sodium;2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-3-methylphenolate
InChI Key	HEFSGAHJDGZCHA-UHFFFAOYNA-M
Molecular Formula	C21H13Br4NaO5S

312

BD Fixable Viability Stain 450

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

Pricing & Availability

313

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Thermo Scientific Chemicals Methyl Orange-xylene cyanol solution in water, pure

CAS: 62758-15-0 Molecular Formula: C39H41N5Na2O10S3 Molecular Weight (g/mol): 881.942 MDL Number: MFCD00077269 InChI Key: DLSJBPNVZNTATN-MXBKRXPOSA-L PubChem CID: 90474202 IUPAC Name: disodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate;4-[(E)-[4-(ethylamino)-3-methylphenyl]-(4-ethylimino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-2-hydroxy-5-sulfobenzenesulfonate SMILES: CCNC1=C(C=C(C=C1)C(=C2C=CC(=NCC)C(=C2)C)C3=CC(=C(C=C3S(=O)(=O)O)S(=O)(=O)[O-])O)C.CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	90474202
CAS	62758-15-0
Molecular Weight (g/mol)	881.942
MDL Number	MFCD00077269
SMILES	CCNC1=C(C=C(C=C1)C(=C2C=CC(=NCC)C(=C2)C)C3=CC(=C(C=C3S(=O)(=O)O)S(=O)(=O)[O-])O)C.CN(C)C1=CC=C(C=C1)N=NC2=CC=C(C=C2)S(=O)(=O)[O-].[Na+].[Na+]
IUPAC Name	disodium;4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonate;4-[(E)-[4-(ethylamino)-3-methylphenyl]-(4-ethylimino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-2-hydroxy-5-sulfobenzenesulfonate
InChI Key	DLSJBPNVZNTATN-MXBKRXPOSA-L
Molecular Formula	C39H41N5Na2O10S3

314

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Thermo Scientific Chemicals Indigo Carmine, for analysis, high purity biological stain

CAS: 860-22-0 Molecular Formula: C16H8N2Na2O8S2 Molecular Weight (g/mol): 466.35 MDL Number: MFCD00005723 InChI Key: KHLVKKOJDHCJMG-QDBORUFSSA-L Synonym: Acid Blue 74,C.I. 73015,5, 5'-Indigodisulfonic acid, disodium salt PubChem CID: 5284351 IUPAC Name: disodium;(2E)-3-oxo-2-(3-oxo-5-sulfonato-1H-indol-2-ylidene)-1H-indole-5-sulfonate SMILES: [Na+].[Na+].[O-]S(=O)(=O)C1=CC=C2N\C(C(=O)C2=C1)=C1\NC2=CC=C(C=C2C1=O)S([O-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	5284351
CAS	860-22-0
Molecular Weight (g/mol)	466.35
MDL Number	MFCD00005723
SMILES	[Na+].[Na+].[O-]S(=O)(=O)C1=CC=C2N\C(C(=O)C2=C1)=C1\NC2=CC=C(C=C2C1=O)S([O-])(=O)=O
Synonym	Acid Blue 74,C.I. 73015,5, 5'-Indigodisulfonic acid, disodium salt
IUPAC Name	disodium;(2E)-3-oxo-2-(3-oxo-5-sulfonato-1H-indol-2-ylidene)-1H-indole-5-sulfonate
InChI Key	KHLVKKOJDHCJMG-QDBORUFSSA-L
Molecular Formula	C16H8N2Na2O8S2

315

MilliporeSigma™ Lugol's solution (Diluted Iodine-Potassium Iodide Solution)

For staining of Gram bacteria

Pricing & Availability
Specifications

Packaging	Plastic Bottle

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