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 (9,151)

Tissue Stain Blocking Reagents (82)

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1,786 – 1,800 of 7,073 results

1,786

Phenol Red, 0.02%, Aqueous, pH 6.8 to 8.4 Yellow to Red, Certified, LabChem™

CAS: 34487-61-1 Molecular Formula: C19H13NaO5S Molecular Weight (g/mol): 376.358 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)	376.358
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

1,787

Universal Indicator, Bogens in Alcohol, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₂₇H₂₈Br₂O₅S
Color	Green
Physical Form	Liquid
UN Number	UN1993
Chemical Name or Material	Universal Indicator
Grade	Certified
Identification	Passes Test
Name Note	Bogens in Alcohol
CAS	547-58-0
Health Hazard 3	GHS P Statement 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. Avoid breathing mist, vapors, spray. Use only outdoors or in a well-ventilated area. Wear protective gloves, protective clothing, eye protection, face protection. Wash exposed skin thoroughly after handling. Use only outdoors or in a well-ventilated area. If on skin (or hair): Remove immediately all contaminated clothing. Rinse skin with water/shower. 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 attention. In case of fire: Use carbon dioxide (CO2), dry chemical 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	Carbon dioxide; Carbon monoxide; Sulfur compounds; Hydrogen bromide
Health Hazard 2	GHS H Statement Highly flammable liquid and vapor. Causes serious eye irritation. May cause drowsiness or dizziness.
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	624.38
CAS Max %	0.05

1,788

Indigo Stock Solution, For Ozone, Certified, LabChem™

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1,789

Methylene Blue, 1% Aqueous, Certified, LabChem™

CAS: 61-73-4 Molecular Formula: C16H18ClN3S Molecular Weight (g/mol): 319.851 InChI Key: CXKWCBBOMKCUKX-UHFFFAOYSA-M PubChem CID: 6099 ChEBI: CHEBI:6872 IUPAC Name: [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;chloride SMILES: CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]

Pricing & Availability
Specifications

PubChem CID	6099
CAS	61-73-4
Molecular Weight (g/mol)	319.851
ChEBI	CHEBI:6872
SMILES	CN(C)C1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]
IUPAC Name	[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;chloride
InChI Key	CXKWCBBOMKCUKX-UHFFFAOYSA-M
Molecular Formula	C16H18ClN3S

1,790

MBTH Indicator, 0.05% Aqueous, for Cyanide, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₈H₉N₃S·HCl
Color	Colorless to Brown
Physical Form	Liquid
Chemical Name or Material	MBTH Indicator
Grade	Certified
Identification	Passes Test
Density	1g/mL
Sensitivity	Passes Test
Name Note	0.05% Aqueous, for Cyanide
CAS	7732-18-5
Health Hazard 3	GHS P Statement If in contact with skin or eyes, rinse thoroughly with water for 15-20 minutes. If swallowed, get medical attention.
Decomposition Information	Nitrogen oxides; Carbon monoxide; Carbon dioxide; Sulfur compounds; Hydrogen chloride
Health Hazard 2	GHS H Statement Solution is not hazardous.
Packaging	Poly Bottle
Solubility Information	Soluble in water
Recommended Storage	Room Temperature
Formula Weight	215.7
Specific Gravity	1g/mL
CAS Max %	0.05

1,791

Alizarin Red S, 1% Aqueous, Certified, LabChem™

CAS: 130-22-3 Molecular Formula: C14H7NaO7S Molecular Weight (g/mol): 342.253 InChI Key: HFVAFDPGUJEFBQ-UHFFFAOYSA-M PubChem CID: 3955344 ChEBI: CHEBI:87358 IUPAC Name: sodium;3,4-dihydroxy-9,10-dioxoanthracene-2-sulfonate SMILES: C1=CC=C2C(=C1)C(=O)C3=CC(=C(C(=C3C2=O)O)O)S(=O)(=O)[O-].[Na+]

Pricing & Availability
Specifications

PubChem CID	3955344
CAS	130-22-3
Molecular Weight (g/mol)	342.253
ChEBI	CHEBI:87358
SMILES	C1=CC=C2C(=C1)C(=O)C3=CC(=C(C(=C3C2=O)O)O)S(=O)(=O)[O-].[Na+]
IUPAC Name	sodium;3,4-dihydroxy-9,10-dioxoanthracene-2-sulfonate
InChI Key	HFVAFDPGUJEFBQ-UHFFFAOYSA-M
Molecular Formula	C14H7NaO7S

1,792

Methylene Blue, Reagent Grade, LabChem™

Pricing & Availability

1,793

Congo Red Indicator, 0.1% (w/v), pH 3.0 to 5.0 Blue to Red, Certified, LabChem™

CAS: 573-58-0 Molecular Formula: C32H22N6Na2O6S2 Molecular Weight (g/mol): 696.664 InChI Key: IQFVPQOLBLOTPF-UHFFFAOYSA-L 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+]
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

1,794

Reagents Holdings Llc Indicator 26 (0.04% Thymolphthalein), in 50% Denatured Ethanol, Reagents

Indicator 26 (0.04% Thymolphthalein), in 50% Denatured Ethanol, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

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1,795

Methyl Purple Indicator, Reagents

Methyl Purple Indicator, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	845-10-3
Color	Dark Green
Physical Form	Liquid
Packaging	Glass Bottle
Chemical Name or Material	Methyl Purple Indicator
Grade	Reagent
Synonym	Modified Methyl Red
Specific Gravity	1.005

1,796

Eriochrome Black T, ACS Reagent (EBT; Mordant Black 11), Reagents

CAS: 1787-61-7 Molecular Formula: C20H12N3NaO7S Molecular Weight (g/mol): 461.38 InChI Key: JHUJLRKQZAPSDP-GXTSIBQPSA-M Synonym: Water hardness indicator 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

CAS	1787-61-7
Molecular Weight (g/mol)	461.38
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	Water hardness indicator
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

1,797

Bromophenol Blue, ACS Reagent (Sultone) not water soluble, Reagents

Bromophenol Blue, ACS Reagent (Sultone) not water soluble, ACS, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

CAS	115-39-9
Molecular Weight (g/mol)	669.9607
Color	Orange
Physical Form	Solid
Packaging	Glass Bottle
Chemical Name or Material	Bromophenol Blue, ACS Reagent (Sultone) not water soluble
Grade	ACS
Synonym	3',3'',5',5''-Tetrabromosulfonphthalein, Tetrabromophenol blue, Bromphenol blue
Molecular Formula	C19H10Br4O5S
Specific Gravity	0.954

1,798

Bromocresol Purple, ACS Reagent (Sultone) not water soluble, Reagents

CAS: 115-40-2 Molecular Formula: C21H16Br2O5S Molecular Weight (g/mol): 540.22 InChI Key: ABIUHPWEYMSGSR-UHFFFAOYSA-N Synonym: Bromcresol purple IUPAC Name: 3,3-bis(3-bromo-4-hydroxy-5-methylphenyl)-3H-2,1λ⁶-benzoxathiole-1,1-dione SMILES: CC1=CC(=CC(Br)=C1O)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(Br)=C1

Pricing & Availability
Specifications

CAS	115-40-2
Molecular Weight (g/mol)	540.22
SMILES	CC1=CC(=CC(Br)=C1O)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(Br)=C1
Synonym	Bromcresol purple
IUPAC Name	3,3-bis(3-bromo-4-hydroxy-5-methylphenyl)-3H-2,1λ⁶-benzoxathiole-1,1-dione
InChI Key	ABIUHPWEYMSGSR-UHFFFAOYSA-N
Molecular Formula	C21H16Br2O5S

1,799

Reagents Holdings Llc Sodium Chromate Indicator, Reagents

Sodium Chromate Indicator, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability

1,800

LabChem, Inc. Alizarin Red S, Reagent Grade, LabChem™

Pricing & Availability
Specifications

PubChem CID	3955344
CAS	130-22-3
Molecular Weight (g/mol)	342.253
ChEBI	CHEBI:87358
SMILES	C1=CC=C2C(=C1)C(=O)C3=CC(=C(C(=C3C2=O)O)O)S(=O)(=O)[O-].[Na+]
IUPAC Name	sodium;3,4-dihydroxy-9,10-dioxoanthracene-2-sulfonate
InChI Key	HFVAFDPGUJEFBQ-UHFFFAOYSA-M
Molecular Formula	C14H7NaO7S

Staining Reagents

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Alizarin Red S, 1% Aqueous, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Alizarin Red S, 1% Aqueous, Certified, LabChem™