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 (9,376)

Tissue Stain Blocking Reagents (81)

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1,186 – 1,200 of 7,310 results

1,186

Bromocresol Green - Methyl Red, Aqueous, for Alkalinity, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₂₁H₁₄Br₄O₅S·Na
Color	Blue to Blue/Green
Physical Form	Liquid
Chemical Name or Material	Bromocresol Green - Methyl Red
Grade	Certified
Identification	Passes Test
Density	1g/mL
Name Note	Aqueous, for Alkalinity
CAS	62625-32-5
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	Carbon monoxide; Carbon dioxide; Nitrogen oxides; Sulfur compounds
Health Hazard 2	GHS H Statement Solution is not hazardous.
Solubility Information	Soluble in water
Recommended Storage	Room Temperature
Formula Weight	720.06
Specific Gravity	1g/mL
CAS Max %	0.1

1,187

Starch Indicator, Preserved with Salicylic Acid (Mercury Free), Certified, 0.5%, LabChem™

Pricing & Availability
Specifications

Physical Form	Liquid
Chemical Name or Material	Starch Indicator
Grade	Certified
Identification	Passes Test
Density	1g/mL
Name Note	Preserved with Salicylic Acid (Mercury Free)
Percent Purity	0.5%
CAS	69-72-7
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	Fume; Carbon monoxide; Carbon dioxide
Health Hazard 2	GHS H Statement Solution is not hazardous.
Solubility Information	Soluble in water
Recommended Storage	Room Temperature
Specific Gravity	1g/mL
CAS Max %	0.1
Suitability	Passes Test

1,188

Crystal Violet Solution R, EP Reagent 1022901, Ricca Chemical

CAS: 64-19-7 Molecular Formula: C2H4O2 Molecular Weight (g/mol): Mixture MDL Number: MFCD00036152 InChI Key: QTBSBXVTEAMEQO-UHFFFAOYSA-N PubChem CID: 176 ChEBI: CHEBI:15366 IUPAC Name: acetic acid SMILES: CC(O)=O

Pricing & Availability
Specifications

PubChem CID	176
CAS	64-19-7
Molecular Weight (g/mol)	Mixture
ChEBI	CHEBI:15366
MDL Number	MFCD00036152
SMILES	CC(O)=O
IUPAC Name	acetic acid
InChI Key	QTBSBXVTEAMEQO-UHFFFAOYSA-N
Molecular Formula	C2H4O2

1,189

Bromopyrogallol Red, TCI America™

CAS: 16574-43-9 Molecular Formula: C19H10Br2O8S Molecular Weight (g/mol): 558.15 MDL Number: MFCD00148865 InChI Key: QFXYYBXMARTXHI-UHFFFAOYSA-N Synonym: Dibromopyrogallolsulfonphthaleine PubChem CID: 85495 IUPAC Name: 2',7'-dibromo-3',4',5',6'-tetrahydroxyspiro[2,1λ⁶-benzoxathiole-3,9'-xanthene]-1,1-dione SMILES: OC1=C(O)C2=C(C=C1Br)C1(OS(=O)(=O)C3=CC=CC=C13)C1=CC(Br)=C(O)C(O)=C1O2

Pricing & Availability
Specifications

PubChem CID	85495
CAS	16574-43-9
Molecular Weight (g/mol)	558.15
MDL Number	MFCD00148865
SMILES	OC1=C(O)C2=C(C=C1Br)C1(OS(=O)(=O)C3=CC=CC=C13)C1=CC(Br)=C(O)C(O)=C1O2
Synonym	Dibromopyrogallolsulfonphthaleine
IUPAC Name	2',7'-dibromo-3',4',5',6'-tetrahydroxyspiro[2,1λ⁶-benzoxathiole-3,9'-xanthene]-1,1-dione
InChI Key	QFXYYBXMARTXHI-UHFFFAOYSA-N
Molecular Formula	C19H10Br2O8S

1,190

Sunset Yellow FCF 90.0+%, TCI America™

CAS: 2783-94-0 Molecular Formula: C16H10N2Na2O7S2 Molecular Weight (g/mol): 452.363 MDL Number: MFCD00036437 InChI Key: TXVRKNUZLYFDTJ-UHFFFAOYSA-L PubChem CID: 6850717 IUPAC Name: disodium;6-oxo-5-[(4-sulfonatophenyl)hydrazinylidene]naphthalene-2-sulfonate SMILES: C1=CC(=CC=C1NN=C2C3=C(C=CC2=O)C=C(C=C3)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	6850717
CAS	2783-94-0
Molecular Weight (g/mol)	452.363
MDL Number	MFCD00036437
SMILES	C1=CC(=CC=C1NN=C2C3=C(C=CC2=O)C=C(C=C3)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
IUPAC Name	disodium;6-oxo-5-[(4-sulfonatophenyl)hydrazinylidene]naphthalene-2-sulfonate
InChI Key	TXVRKNUZLYFDTJ-UHFFFAOYSA-L
Molecular Formula	C16H10N2Na2O7S2

1,191

CAS	1787-61-7
Physical Form	Powder
CAS Min %	0.98
Chemical Name or Material	Total Hardness Indicator
CAS Max %	1.02

1,192

Coomassie Brilliant Blue R-250 [for Electrophoresis], TCI America™

CAS: 6104-59-2 Molecular Formula: C45H44N3NaO7S2 Molecular Weight (g/mol): 825.97 MDL Number: MFCD00041762 InChI Key: HAEGGLCXLFWTBE-UHFFFAOYSA-M Synonym: Acid Cyanine 6B, Alizarin Rubinol 5G, Solar Cyanine 6B, Acid Blue 83, Brilliant Blue R, CBB R-250 PubChem CID: 61365 IUPAC Name: sodium {4-[(4-ethoxyphenyl)amino]phenyl}bis(4-{ethyl[(3-sulfonatophenyl)methyl]amino}phenyl)methylium 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

Pricing & Availability
Specifications

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	Acid Cyanine 6B, Alizarin Rubinol 5G, Solar Cyanine 6B, Acid Blue 83, Brilliant Blue R, CBB R-250
IUPAC Name	sodium {4-[(4-ethoxyphenyl)amino]phenyl}bis(4-{ethyl[(3-sulfonatophenyl)methyl]amino}phenyl)methylium
InChI Key	HAEGGLCXLFWTBE-UHFFFAOYSA-M
Molecular Formula	C45H44N3NaO7S2

1,193

Indophenol Blue, TCI America™

CAS: 132-31-0 Molecular Formula: C18H16N2O Molecular Weight (g/mol): 276.339 MDL Number: MFCD00041739 InChI Key: VRZJGENLTNRAIG-UHFFFAOYSA-N Synonym: N-(4-Dimethylaminophenyl)-1,4-naphthoquinoneimine, alpha-Naphthol Blue PubChem CID: 67235 IUPAC Name: 4-[4-(dimethylamino)phenyl]iminonaphthalen-1-one SMILES: CN(C)C1=CC=C(C=C1)N=C2C=CC(=O)C3=CC=CC=C23

Pricing & Availability
Specifications

PubChem CID	67235
CAS	132-31-0
Molecular Weight (g/mol)	276.339
MDL Number	MFCD00041739
SMILES	CN(C)C1=CC=C(C=C1)N=C2C=CC(=O)C3=CC=CC=C23
Synonym	N-(4-Dimethylaminophenyl)-1,4-naphthoquinoneimine, alpha-Naphthol Blue
IUPAC Name	4-[4-(dimethylamino)phenyl]iminonaphthalen-1-one
InChI Key	VRZJGENLTNRAIG-UHFFFAOYSA-N
Molecular Formula	C18H16N2O

1,194

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

1,195

p-Dimethylaminobenzaldehyde, ACS Reagent Grade, Ricca Chemical

CAS: 100-10-7 Molecular Formula: C9H11NO Molecular Weight (g/mol): 149.19 MDL Number: MFCD00003381 InChI Key: BGNGWHSBYQYVRX-UHFFFAOYSA-N PubChem CID: 7479 IUPAC Name: 4-(dimethylamino)benzaldehyde SMILES: CN(C)C1=CC=C(C=O)C=C1

Pricing & Availability
Specifications

PubChem CID	7479
CAS	100-10-7
Molecular Weight (g/mol)	149.19
MDL Number	MFCD00003381
SMILES	CN(C)C1=CC=C(C=O)C=C1
IUPAC Name	4-(dimethylamino)benzaldehyde
InChI Key	BGNGWHSBYQYVRX-UHFFFAOYSA-N
Molecular Formula	C9H11NO

1,196

Phenolphthalein, 0.1% (w/v) in 50% (v/v) Isopropyl Alcohol Neutralized, Ricca Chemical

Pricing & Availability

1,197

Starch Indicator, 0.3% (w/v), Ricca Chemical

Pricing & Availability
Specifications

Percent Purity	0.3% W/V
CAS	69-72-7
Color	White
pH	5 to 7
Packaging	Natural Poly Bottle
Grade	Indicator

1,198

Carmine Reagent, for Boron determination, Ricca Chemical

For Boron determination

Pricing & Availability
Specifications

CAS	7732-18-5
Color	Red
pH	<3
CAS Min %	0.05
Chemical Name or Material	Carmine Reagent
Grade	Laboratory
CAS Max %	0.05

1,199

StatLab MasterTech Light Green Counterstain

An extremely popular counterstain in histology

Pricing & Availability

1,200

Yoshimulactone Green (YLG) 98.0+%, TCI America™

CAS: 1807549-00-3 Molecular Formula: C27H20O7 Molecular Weight (g/mol): 456.45 MDL Number: MFCD29472531 InChI Key: CHRFZINIRYDHJV-UHFFFAOYNA-N Synonym: 2-[6-[(2,5-Dihydro-4-methyl-5-oxo-2-furanyl)oxy]-3-oxo-3H-xanthen-9-yl]benzoic Acid Ethyl Ester, Ethyl 2-[6-[(2,5-Dihydro-4-methyl-5-oxo-2-furanyl)oxy]-3-oxo-3H-xanthen-9-yl]benzoate PubChem CID: 131637025 IUPAC Name: ethyl 2-{6-[(4-methyl-5-oxo-2,5-dihydrofuran-2-yl)oxy]-3-oxo-3H-xanthen-9-yl}benzoate SMILES: CCOC(=O)C1=CC=CC=C1C1=C2C=CC(=O)C=C2OC2=CC(OC3OC(=O)C(C)=C3)=CC=C12

Pricing & Availability
Specifications

PubChem CID	131637025
CAS	1807549-00-3
Molecular Weight (g/mol)	456.45
MDL Number	MFCD29472531
SMILES	CCOC(=O)C1=CC=CC=C1C1=C2C=CC(=O)C=C2OC2=CC(OC3OC(=O)C(C)=C3)=CC=C12
Synonym	2-[6-[(2,5-Dihydro-4-methyl-5-oxo-2-furanyl)oxy]-3-oxo-3H-xanthen-9-yl]benzoic Acid Ethyl Ester, Ethyl 2-[6-[(2,5-Dihydro-4-methyl-5-oxo-2-furanyl)oxy]-3-oxo-3H-xanthen-9-yl]benzoate
IUPAC Name	ethyl 2-{6-[(4-methyl-5-oxo-2,5-dihydrofuran-2-yl)oxy]-3-oxo-3H-xanthen-9-yl}benzoate
InChI Key	CHRFZINIRYDHJV-UHFFFAOYNA-N
Molecular Formula	C27H20O7

Staining Reagents

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