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 (9,271)

Tissue Stain Blocking Reagents (82)

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1,786 – 1,800 of 7,208 results

1,786

Phenol Red, 0.1%, Aqueous, 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+]

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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

Xylenol Orange, 0.2% Alcoholic, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₃₁H₂₈N₂Na₄O₁₃S
Color	Purple
Physical Form	Liquid
Chemical Name or Material	Xylenol Orange
Grade	Certified
Identification	Passes Test
Density	0.8g/mL
Name Note	0.2% Alcoholic
CAS	3618-43-7
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, hot surfaces, open flames, sparks. No smoking. Keep container tightly closed. Ground/bond container and receiving equipment. Use explosion-proof electrical, lighting, ventilating equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Do not breathe mist, spray, vapors. Do not eat, drink or smoke when using this product. Wear eye protection, face protection, protective clothing, protective gloves. Wash exposed skin thoroughly after handling. If exposed or concerned: Get medical advice/attention. If on skin (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. 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	Carbon monoxide; Carbon dioxide
Health Hazard 2	GHS H Statement Highly flammable liquid and vapor. Suspected of damaging of the unborn child. Causes damage to organs (central nervous system, optic nerve, liver, kidneys).
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	760.59
Specific Gravity	0.8g/mL
CAS Max %	0.2
Suitability	Passes Test

1,788

Thymolphthalein, 0.05% in Ethanol, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₂₈H₃₀O₄
Color	Colorless to Blue
Physical Form	Liquid
Chemical Name or Material	Thymolphthalein
Grade	Certified
Identification	Passes Test
Name Note	0.05% in Ethanol
CAS	125-20-2
Health Hazard 3	GHS P Statement Wear eye protection, protective gloves. Wash exposed skin thoroughly after handling. If on skin: Wash with plenty of soap and water. Take off contaminated clothing. If skin irritation occurs: Get medical advice/attention. 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.
Decomposition Information	Fume; Carbon monoxide; Carbon dioxide; May release flammable gases
Health Hazard 2	GHS H Statement Highly flammable liquid and vapor. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. Causes damage to organs (central nervous system, optic nerve) (oral).
pH	9.3 to 10.5
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	430.5
CAS Max %	0.05

1,789

Methyl Red, 0.02% Aqueous, pH 4.2 to 6.3 Pink to Yellow, Certified, LabChem™

CAS: 845-10-3 Molecular Formula: C15H14N3NaO2 Molecular Weight (g/mol): 291.286 InChI Key: GNTPCYMJCJNRQB-UHFFFAOYSA-M 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+]

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Specifications

PubChem CID	4465632
CAS	845-10-3
Molecular Weight (g/mol)	291.286
SMILES	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]
IUPAC Name	sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate
InChI Key	GNTPCYMJCJNRQB-UHFFFAOYSA-M
Molecular Formula	C15H14N3NaO2

1,790

Methyl Red, 1.0% Aqueous, pH 4.2 to 6.3 Pink to Yellow, Certified, LabChem™

Pricing & Availability
Specifications

PubChem CID	4465632
CAS	845-10-3
Molecular Weight (g/mol)	291.286
SMILES	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]
IUPAC Name	sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate
InChI Key	GNTPCYMJCJNRQB-UHFFFAOYSA-M
Molecular Formula	C15H14N3NaO2

1,791

Phenolphthalein, 0.5% In 50% Ethanol, pH 8.3 to 10.0 Colorless to Pink, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₂₀H₁₄O₄
Color	Colorless to Pink
Physical Form	Liquid
Chemical Name or Material	Phenolphthalein
Grade	Certified
Identification	Passes Test
Density	0.95g/mL
CAS	77-09-8
Decomposition Information	Carbon monoxide; Carbon dioxide
Health Hazard 2	GHS H Statement Flammable liquid and vapor. May cause cancer. Suspected of damaging the unborn child (oral). Causes damage to organs (central nervous system, optic nerve) (oral, dermal).
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	318.32
Specific Gravity	0.95g/mL
CAS Max %	0.5

1,792

Methyl Orange, Modified, Certified, LabChem™

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1,793

PAN Indicator, 0.3% in Ethanol, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₁₅H₁₁N₃O
Color	Orange to Red
Physical Form	Liquid
UN Number	UN1170
Chemical Name or Material	PAN Indicator
Grade	Certified
Identification	Passes Test
Name Note	0.3% in Ethanol
CAS	85-85-8
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. Do not eat, drink or smoke when using this product. Wear protective gloves, eye protection. Wash exposed skin thoroughly after handling. If exposed or concerned: Get medical advice/attention. 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. In case of fire: Use alcohol resistant foam, carbon dioxide (CO2), extinguishing powder to extinguish. Store locked up in cool, well-ventilated place. Dispose of contents/container to comply with local, state and federal regulations.
Decomposition Information	Carbon monoxide; Carbon dioxide; May release flammable gases
Health Hazard 2	GHS H Statement Highly flammable liquid and vapor. Harmful if swallowed. May cause cancer (oral). Suspected of damaging fertility or the unborn child (oral). Causes damage to organs (central nervous system, kidneys, liver, optic nerve) (oral, dermal).
Packaging	Amber Glass
Solubility Information	Soluble in water
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	249.27
CAS Max %	0.3
Suitability	Passes Test

1,794

Phenol Red Sodium Salt, ACS Grade, LabChem™

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

1,795

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

1,796

Phenol Red, 0.04%, Aqueous, pH 6.8 to 8.4 Yellow to Red, Certified, LabChem™

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

1,797

Chlorophenol Red Sodium Salt, Reagent Grade, LabChem™

CAS: 123333-64-2 Molecular Formula: C19H11Cl2O5S Molecular Weight (g/mol): 422.25 MDL Number: MFCD00151199 InChI Key: QXTPRQZMDKBTAI-UNOMPAQXSA-M PubChem CID: 131846007 IUPAC Name: 2-[(3-chloro-4-hydroxyphenyl)[(1Z)-3-chloro-4-oxocyclohexa-2,5-dien-1-ylidene]methyl]benzene-1-sulfonate SMILES: OC1=CC=C(C=C1Cl)C(=C1/C=CC(=O)C(Cl)=C1)\C1=CC=CC=C1S([O-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	131846007
CAS	123333-64-2
Molecular Weight (g/mol)	422.25
MDL Number	MFCD00151199
SMILES	OC1=CC=C(C=C1Cl)C(=C1/C=CC(=O)C(Cl)=C1)\C1=CC=CC=C1S([O-])(=O)=O
IUPAC Name	2-[(3-chloro-4-hydroxyphenyl)[(1Z)-3-chloro-4-oxocyclohexa-2,5-dien-1-ylidene]methyl]benzene-1-sulfonate
InChI Key	QXTPRQZMDKBTAI-UNOMPAQXSA-M
Molecular Formula	C19H11Cl2O5S

1,798

Gentian Violet, 1% Aqueous, Certified, LabChem™

CAS: 548-62-9 Molecular Formula: C25H30ClN3 Molecular Weight (g/mol): 407.986 InChI Key: ZXJXZNDDNMQXFV-UHFFFAOYSA-M PubChem CID: 11057 ChEBI: CHEBI:41688 IUPAC Name: [4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium;chloride SMILES: CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=C(C=C3)N(C)C.[Cl-]

Pricing & Availability
Specifications

PubChem CID	11057
CAS	548-62-9
Molecular Weight (g/mol)	407.986
ChEBI	CHEBI:41688
SMILES	CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=C(C=C3)N(C)C.[Cl-]
IUPAC Name	[4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium;chloride
InChI Key	ZXJXZNDDNMQXFV-UHFFFAOYSA-M
Molecular Formula	C25H30ClN3

1,799

Xylenol Orange, 0.1% Aqueous, Certified, LabChem™

CAS: 3618-43-7

Pricing & Availability
Specifications

CAS	3618-43-7

1,800

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

Staining Reagents

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Phenolphthalein, 0.5% In 50% Ethanol, pH 8.3 to 10.0 Colorless to Pink, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Phenolphthalein, 0.5% In 50% Ethanol, pH 8.3 to 10.0 Colorless to Pink, Certified, LabChem™