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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1,981 – 1,995 of 7,096 results

1,981

Congo Red, Reagents

CAS: 573-58-0 Molecular Formula: C32H22N6Na2O6S2 Molecular Weight (g/mol): 696.66 InChI Key: IQFVPQOLBLOTPF-UHFFFAOYSA-L Synonym: Direct Red 28, Color Index 22120 IUPAC Name: disodium 4-amino-3-(2-{4'-[2-(1-amino-4-sulfonatonaphthalen-2-yl)diazen-1-yl]-[1,1'-biphenyl]-4-yl}diazen-1-yl)naphthalene-1-sulfonate SMILES: [Na+].[Na+].NC1=C2C=CC=CC2=C(C=C1N=NC1=CC=C(C=C1)C1=CC=C(C=C1)N=NC1=CC(=C2C=CC=CC2=C1N)S([O-])(=O)=O)S([O-])(=O)=O

Pricing & Availability
Specifications

CAS	573-58-0
Molecular Weight (g/mol)	696.66
SMILES	[Na+].[Na+].NC1=C2C=CC=CC2=C(C=C1N=NC1=CC=C(C=C1)C1=CC=C(C=C1)N=NC1=CC(=C2C=CC=CC2=C1N)S([O-])(=O)=O)S([O-])(=O)=O
Synonym	Direct Red 28, Color Index 22120
IUPAC Name	disodium 4-amino-3-(2-{4'-[2-(1-amino-4-sulfonatonaphthalen-2-yl)diazen-1-yl]-[1,1'-biphenyl]-4-yl}diazen-1-yl)naphthalene-1-sulfonate
InChI Key	IQFVPQOLBLOTPF-UHFFFAOYSA-L
Molecular Formula	C32H22N6Na2O6S2

1,982

Thymol Blue Indicator, 0.04% w/v, Reagents

Thymol Blue Indicator, 0.04% w/v, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	0.04%
CAS	62625-21-2
Color	Orange/Red
Physical Form	Liquid
Packaging	Poly Bottle
Chemical Name or Material	Thymol Blue Indicator, 0.04% w/v
Grade	Reagent
Synonym	Thymolsulfonphthalein
Specific Gravity	1.001

1,983

Thymolphthalein Solution, 3 g/L, Reagents

Thymolphthalein Solution, 3 g/L, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability

1,984

Methylene Blue Chloride Indicator Solution, Reagents

Methylene Blue Chloride Indicator Solution, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability

1,985

Methyl Orange Indicator, 0.1% w/v Prepared in accordance with ASTM D974 procedures, Reagents

Methyl Orange Indicator, 0.1% w/v Prepared in accordance with ASTM D974 procedures, ASTM, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	0.1%
CAS	547-58-0
Color	Orange
Physical Form	Liquid
Chemical Name or Material	Methyl Orange Indicator, 0.1% w/v Prepared in accordance with ASTM D974 procedures
Grade	ASTM
Synonym	Orange III, Helianthine
Molecular Formula	C14H14N3NaO3S/H2O
Specific Gravity	1.001

1,986

Azo Violet Indicator, 0.025% w/v, Reagents

Azo Violet Indicator, 0.025% w/v, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	0.025%
CAS	74-39-5
Color	Violet
Physical Form	Liquid
Packaging	Glass Bottle
Chemical Name or Material	Azo Violet Indicator, 0.025% w/v
Grade	Reagent
Synonym	p-Nitrophenylazoresorcinol, 4-[(4-Nitrophenyl)diazenyl]benzene-1,3-diol
Specific Gravity	1.0001

1,987

Eriochrome Black T 0.5% in Triethanolamine, Reagents

CAS: 102-71-6 Molecular Formula: C6H15NO3 Molecular Weight (g/mol): 149.19 MDL Number: MFCD00002855 InChI Key: GSEJCLTVZPLZKY-UHFFFAOYSA-N Synonym: Water hardness indicator IUPAC Name: 2-[bis(2-hydroxyethyl)amino]ethan-1-ol SMILES: OCCN(CCO)CCO

Pricing & Availability
Specifications

CAS	102-71-6
Molecular Weight (g/mol)	149.19
MDL Number	MFCD00002855
SMILES	OCCN(CCO)CCO
Synonym	Water hardness indicator
IUPAC Name	2-[bis(2-hydroxyethyl)amino]ethan-1-ol
InChI Key	GSEJCLTVZPLZKY-UHFFFAOYSA-N
Molecular Formula	C6H15NO3

1,988

Phenol Red, ACS Reagent (Phenolsulfonphthalein), Reagents

CAS: 143-74-8 Molecular Formula: C19H14O5S Molecular Weight (g/mol): 354.38 InChI Key: BELBBZDIHDAJOR-UHFFFAOYSA-N Synonym: Phenolsulfonphthalein IUPAC Name: 3,3-bis(4-hydroxyphenyl)-3H-2,1λ⁶-benzoxathiole-1,1-dione SMILES: OC1=CC=C(C=C1)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1

Pricing & Availability
Specifications

CAS	143-74-8
Molecular Weight (g/mol)	354.38
SMILES	OC1=CC=C(C=C1)C1(OS(=O)(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1
Synonym	Phenolsulfonphthalein
IUPAC Name	3,3-bis(4-hydroxyphenyl)-3H-2,1λ⁶-benzoxathiole-1,1-dione
InChI Key	BELBBZDIHDAJOR-UHFFFAOYSA-N
Molecular Formula	C19H14O5S

1,989

Bromocresol Purple, 1% w/v Aqueous, Reagents

CAS: 7732-18-5 Molecular Formula: H2O Molecular Weight (g/mol): 18.02 InChI Key: XLYOFNOQVPJJNP-UHFFFAOYSA-N Synonym: Bromcresol purple IUPAC Name: water SMILES: O

Pricing & Availability
Specifications

CAS	7732-18-5
Molecular Weight (g/mol)	18.02
SMILES	O
Synonym	Bromcresol purple
IUPAC Name	water
InChI Key	XLYOFNOQVPJJNP-UHFFFAOYSA-N
Molecular Formula	H2O

1,990

Methyl Red Indicator, 0.02% Aqueous, Reagents

Methyl Red Indicator, 0.02% Aqueous, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	0.02%
CAS	845-10-3
Color	Orange to Red
Physical Form	Liquid
Chemical Name or Material	Methyl Red Indicator, 0.02% Aqueous
Grade	Reagent
Synonym	Acid Red 2, 2-[[4-(Dimethylamino)phenyl]diazenyl]benzoic Acid
Specific Gravity	1.001

1,991

Methyl Orange-Xylene Cyanole Indicator, Reagents

Methyl Orange-Xylene Cyanole Indicator, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	2650-17-1
Color	Blue to Green
Physical Form	Liquid
Packaging	Poly Bottle
Chemical Name or Material	Methyl Orange, Xylene Cyanole
Grade	Reagent
Synonym	Modified Methyl Orange
Specific Gravity	1.0005

1,992

Chrome Azurol S (Mordant Blue 29, CI 43825), Reagents

Chrome Azurol S (Mordant Blue 29, CI 43825), Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability

1,993

Bromophenol Blue, 0.5% (w/w) in IPA, Reagents

Bromophenol Blue, 0.5% (w/w) in IPA, Reagent, for general laboratory use. Manufactured in ISO 9001 facility.

Pricing & Availability

1,994

Indicator A, Reagents

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

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	3625-57-8
Color	Blue
Physical Form	Liquid
Chemical Name or Material	Indicator A
Grade	Reagent
Synonym	Nile blue sulfate
Specific Gravity	1.001

1,995

Phenolphthalein, 0.0074% w/v in IPA, Reagents

CAS: 67-63-0 Molecular Formula: C3H8O Molecular Weight (g/mol): 60.10 InChI Key: KFZMGEQAYNKOFK-UHFFFAOYSA-N Synonym: 3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one IUPAC Name: propan-2-ol SMILES: CC(C)O

Pricing & Availability
Specifications

CAS	67-63-0
Molecular Weight (g/mol)	60.10
SMILES	CC(C)O
Synonym	3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one
IUPAC Name	propan-2-ol
InChI Key	KFZMGEQAYNKOFK-UHFFFAOYSA-N
Molecular Formula	C3H8O

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