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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796 – 810 of 7,000 results

796

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Thermo Scientific Chemicals Nitro Blue Tetrazolium Chloride monohydrate, 90%

CAS: 298-83-9 | C40H30Cl2N10O6 | 817.644 g/mol

Pricing & Availability
Specifications

Molecular Weight (g/mol)	817.644
Color	Yellow
Loss on Drying	10% max. (105°C)
ChEBI	CHEBI:9505
Physical Form	Powder
CAS Min %	88.0
Chemical Name or Material	Nitro Blue Tetrazolium Chloride monohydrate
SMILES	COC1=C(C=CC(=C1)C2=CC(=C(C=C2)[N+]3=NC(=NN3C4=CC=C(C=C4)[N+](=O)[O-])C5=CC=CC=C5)OC)[N+]6=NC(=NN6C7=CC=C(C=C7)[N+](=O)[O-])C8=CC=CC=C8.[Cl-].[Cl-]
InChI Key	FSVCQIDHPKZJSO-UHFFFAOYSA-L
Assay Percent Range	90%
PubChem CID	9281
Percent Purity	≥88%
CAS	7732-18-5
Infrared Spectrum	Authentic
Health Hazard 3	GHS P Statement: Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Do not breathe dust/fume/gas/mist/vapors/spray. Do not eat, drink or smoke when using this product. IF exposed or concerned: Get medical advice/attention. IF ON SKIN: Wash with plenty of soap and water. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
MDL Number	MFCD00150013
Health Hazard 2	GHS H Statement: Harmful if swallowed. Harmful in contact with skin. Harmful if inhaled. Causes serious eye irritation. May cause respiratory irritation. Causes skin irritation. May cause damage to organs.
Packaging	Glass bottle
Synonym	Nitro BT,Nitro blue tetrazolium
IUPAC Name	2-[2-methoxy-4-[3-methoxy-4-[3-(4-nitrophenyl)-5-phenyltetrazol-2-ium-2-yl]phenyl]phenyl]-3-(4-nitrophenyl)-5-phenyltetrazol-2-ium;dichloride
Molecular Formula	C40H30Cl2N10O6
Formula Weight	867.69
CAS Max %	100.0

797

Biebrich Scarlet, MP Biomedicals™

Molecular Formula: C22H14N4Na2O7S2 Molecular Weight (g/mol): 556.47 MDL Number: MFCD00003891 InChI Key: YCKMEQRBEVVZQF-VKZXTWAVSA-L Synonym: Acid Red 66 PubChem CID: 16219040 IUPAC Name: disodium 2-{2-[(1Z)-2-oxo-1,2-dihydronaphthalen-1-ylidene]hydrazin-1-yl}-5-[2-(4-sulfonatophenyl)diazen-1-yl]benzene-1-sulfonate SMILES: [Na+].[Na+].[O-]S(=O)(=O)C1=CC=C(C=C1)N=NC1=CC=C(N\N=C2/C(=O)C=CC3=CC=CC=C23)C(=C1)S([O-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	16219040
Molecular Weight (g/mol)	556.47
MDL Number	MFCD00003891
SMILES	[Na+].[Na+].[O-]S(=O)(=O)C1=CC=C(C=C1)N=NC1=CC=C(N\N=C2/C(=O)C=CC3=CC=CC=C23)C(=C1)S([O-])(=O)=O
Synonym	Acid Red 66
IUPAC Name	disodium 2-{2-[(1Z)-2-oxo-1,2-dihydronaphthalen-1-ylidene]hydrazin-1-yl}-5-[2-(4-sulfonatophenyl)diazen-1-yl]benzene-1-sulfonate
InChI Key	YCKMEQRBEVVZQF-VKZXTWAVSA-L
Molecular Formula	C22H14N4Na2O7S2

798

Ponceau S, 85%, MP Biomedicals Inc

CAS: 6226-79-5 Molecular Formula: C22H12N4Na4O13S4 Molecular Weight (g/mol): 760.552 InChI Key: VSXKEUCERCWGKF-STNZDNLRSA-J Synonym: 3-Hydroxy-4-(2-sulfo-4-(4-sulfophenylazo)phenylazo)-2, 7-naphthalene-disulfonic acid tetrasodium salt,C.I. 27195 PubChem CID: 11320219 IUPAC Name: tetrasodium;(4Z)-3-oxo-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2,7-disulfonate SMILES: C1=CC(=CC=C1N=NC2=CC(=C(C=C2)NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	11320219
CAS	6226-79-5
Molecular Weight (g/mol)	760.552
SMILES	C1=CC(=CC=C1N=NC2=CC(=C(C=C2)NN=C3C4=C(C=C(C=C4)S(=O)(=O)[O-])C=C(C3=O)S(=O)(=O)[O-])S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+].[Na+]
Synonym	3-Hydroxy-4-(2-sulfo-4-(4-sulfophenylazo)phenylazo)-2, 7-naphthalene-disulfonic acid tetrasodium salt,C.I. 27195
IUPAC Name	tetrasodium;(4Z)-3-oxo-4-[[2-sulfonato-4-[(4-sulfonatophenyl)diazenyl]phenyl]hydrazinylidene]naphthalene-2,7-disulfonate
InChI Key	VSXKEUCERCWGKF-STNZDNLRSA-J
Molecular Formula	C22H12N4Na4O13S4

799

Erythrosin B, ∽98%, MP Biomedicals™

CAS: 15905-32-5 Molecular Formula: C20H8I4O5 Molecular Weight (g/mol): 835.90 MDL Number: MFCD00005044 InChI Key: OALHHIHQOFIMEF-UHFFFAOYSA-N Synonym: Solvent Red 140 PubChem CID: 3259 IUPAC Name: 3',6'-dihydroxy-2',4',5',7'-tetraiodo-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one SMILES: OC1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C(O)C(I)=C1O2

Pricing & Availability
Specifications

PubChem CID	3259
CAS	15905-32-5
Molecular Weight (g/mol)	835.90
MDL Number	MFCD00005044
SMILES	OC1=C(I)C2=C(C=C1I)C1(OC(=O)C3=C1C=CC=C3)C1=CC(I)=C(O)C(I)=C1O2
Synonym	Solvent Red 140
IUPAC Name	3',6'-dihydroxy-2',4',5',7'-tetraiodo-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one
InChI Key	OALHHIHQOFIMEF-UHFFFAOYSA-N
Molecular Formula	C20H8I4O5

800

Giemsa's azur-eosin-methylene blue, For Microscopy, MilliporeSigma™

Pricing & Availability
Specifications

CAS	61-73-4
Color	Dark Green
Physical Form	Solid
Packaging	Glass bottle
Health Hazard 1	H319: Causes serious eye irritation.
Chemical Name or Material	Giemsa's azur-eosin-methylene blue
Odor	Weak characteristic odor

801

MilliporeSigma™ Schiff's reagent

Used for Microscopy

Pricing & Availability
Specifications

Storage Requirements	15° to 25°C

802

Azure B, MP Biomedicals™

CAS: 531-55-5 Molecular Formula: C15H16ClN3S Molecular Weight (g/mol): 305.824 MDL Number: MFCD00011935 InChI Key: DNDJEIWCTMMZBX-UHFFFAOYSA-N Synonym: C.I. 52010,N, N, N-Trimethylthionin PubChem CID: 68275 IUPAC Name: dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium;chloride SMILES: CNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]

Pricing & Availability
Specifications

PubChem CID	68275
CAS	531-55-5
Molecular Weight (g/mol)	305.824
MDL Number	MFCD00011935
SMILES	CNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]
Synonym	C.I. 52010,N, N, N-Trimethylthionin
IUPAC Name	dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium;chloride
InChI Key	DNDJEIWCTMMZBX-UHFFFAOYSA-N
Molecular Formula	C15H16ClN3S

803

Carmine, MP Biomedicals™

CAS: 1390-65-4 Molecular Formula: C22H20O13 Molecular Weight (g/mol): 492.39 MDL Number: MFCD00167028 InChI Key: DGQLVPJVXFOQEV-UHFFFAOYNA-N Synonym: Carminic acid,Cochineal,Natural Red 4,Nacarat PubChem CID: 25113282 IUPAC Name: 3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-7-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-9,10-dihydroanthracene-2-carboxylic acid SMILES: CC1=C(C(O)=O)C(O)=CC2=C1C(=O)C1=C(O)C(C3OC(CO)C(O)C(O)C3O)=C(O)C(O)=C1C2=O

Pricing & Availability
Specifications

PubChem CID	25113282
CAS	1390-65-4
Molecular Weight (g/mol)	492.39
MDL Number	MFCD00167028
SMILES	CC1=C(C(O)=O)C(O)=CC2=C1C(=O)C1=C(O)C(C3OC(CO)C(O)C(O)C3O)=C(O)C(O)=C1C2=O
Synonym	Carminic acid,Cochineal,Natural Red 4,Nacarat
IUPAC Name	3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-7-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-9,10-dihydroanthracene-2-carboxylic acid
InChI Key	DGQLVPJVXFOQEV-UHFFFAOYNA-N
Molecular Formula	C22H20O13

804

Eosin Y Free Acid, MP Biomedicals

CAS: 15086-94-9 Molecular Formula: C₂₀H₈Br₄O₅ Synonym: 2,4,5,7-Tetrabromofluorescein,Eosin yellowish

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Specifications

CAS	15086-94-9
Synonym	2,4,5,7-Tetrabromofluorescein,Eosin yellowish
Molecular Formula	C₂₀H₈Br₄O₅

805

Malachite green oxalate salt, MP Biomedicals™

CAS: 2437-29-8 Molecular Formula: C52H54N4O12 Molecular Weight (g/mol): 927.02 MDL Number: MFCD00011766,MFCD00151209 InChI Key: CNYGFPPAGUCRIC-UHFFFAOYSA-L Synonym: N,N,N',N'-Tetramethyl-4,4'-diaminotriphenylcarbenium oxalate,N, N, N' PubChem CID: 2724411 IUPAC Name: bis(bis[4-(dimethylamino)phenyl](phenyl)methylium) oxalic acid dihydrogen oxalate SMILES: OC(=O)C(O)=O.OC(=O)C([O-])=O.OC(=O)C([O-])=O.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C

Pricing & Availability
Specifications

PubChem CID	2724411
CAS	2437-29-8
Molecular Weight (g/mol)	927.02
MDL Number	MFCD00011766,MFCD00151209
SMILES	OC(=O)C(O)=O.OC(=O)C([O-])=O.OC(=O)C([O-])=O.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C.CN(C)C1=CC=C(C=C1)[C+](C1=CC=CC=C1)C1=CC=C(C=C1)N(C)C
Synonym	N,N,N',N'-Tetramethyl-4,4'-diaminotriphenylcarbenium oxalate,N, N, N'
IUPAC Name	bis(bis[4-(dimethylamino)phenyl](phenyl)methylium) oxalic acid dihydrogen oxalate
InChI Key	CNYGFPPAGUCRIC-UHFFFAOYSA-L
Molecular Formula	C52H54N4O12

806

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Thermo Scientific Chemicals Methylene Blue hydrate, 96+%, high purity biological stain

CAS: 122965-43-9 Molecular Formula: C16H18ClN3S Molecular Weight (g/mol): 319.85 MDL Number: MFCD00150006 InChI Key: CXKWCBBOMKCUKX-UHFFFAOYSA-M Synonym: Basic Blue 9 hydrate,C.I. 52015 hydrate PubChem CID: 16211647 IUPAC Name: [7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;chloride;hydrate SMILES: [Cl-].CN(C)C1=CC=C2N=C3C=CC(C=C3SC2=C1)=[N+](C)C

Pricing & Availability
Specifications

PubChem CID	16211647
CAS	122965-43-9
Molecular Weight (g/mol)	319.85
MDL Number	MFCD00150006
SMILES	[Cl-].CN(C)C1=CC=C2N=C3C=CC(C=C3SC2=C1)=[N+](C)C
Synonym	Basic Blue 9 hydrate,C.I. 52015 hydrate
IUPAC Name	[7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;chloride;hydrate
InChI Key	CXKWCBBOMKCUKX-UHFFFAOYSA-M
Molecular Formula	C16H18ClN3S

807

Fluorescamine, MP Biomedicals™

CAS: 38183-12-9 Molecular Formula: C17H10O4 Molecular Weight (g/mol): 278.26 MDL Number: MFCD00005928 InChI Key: ZFKJVJIDPQDDFY-UHFFFAOYNA-N Synonym: 4-phenylspiro[furan-2(3H)-1'-(3'-H)-isobenzofuran]-3, 3'-dione PubChem CID: 37927 SMILES: O=C1OC2(OC=C(C2=O)C2=CC=CC=C2)C2=CC=CC=C12

Pricing & Availability
Specifications

PubChem CID	37927
CAS	38183-12-9
Molecular Weight (g/mol)	278.26
MDL Number	MFCD00005928
SMILES	O=C1OC2(OC=C(C2=O)C2=CC=CC=C2)C2=CC=CC=C12
Synonym	4-phenylspiro[furan-2(3H)-1'-(3'-H)-isobenzofuran]-3, 3'-dione
InChI Key	ZFKJVJIDPQDDFY-UHFFFAOYNA-N
Molecular Formula	C17H10O4

808

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Thermo Scientific Chemicals Tetranitro blue tetrazolium chloride, 97%

CAS: 1184-43-6 Molecular Formula: C40H28Cl2N12O10 Molecular Weight (g/mol): 907.64 MDL Number: MFCD00036338 InChI Key: VCESGVLABVSDRO-UHFFFAOYSA-L Synonym: TNBT PubChem CID: 129893520 SMILES: [Cl-].[Cl-].COC1=CC(=CC=C1[N+]1=NC(=NN1C1=CC=C(C=C1)[N+]([O-])=O)C1=CC=C(C=C1)[N+]([O-])=O)C1=CC=C(C(OC)=C1)[N+]1=NC(=NN1C1=CC=C(C=C1)[N+]([O-])=O)C1=CC=C(C=C1)[N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	129893520
CAS	1184-43-6
Molecular Weight (g/mol)	907.64
MDL Number	MFCD00036338
SMILES	[Cl-].[Cl-].COC1=CC(=CC=C1[N+]1=NC(=NN1C1=CC=C(C=C1)[N+]([O-])=O)C1=CC=C(C=C1)[N+]([O-])=O)C1=CC=C(C(OC)=C1)[N+]1=NC(=NN1C1=CC=C(C=C1)[N+]([O-])=O)C1=CC=C(C=C1)[N+]([O-])=O
Synonym	TNBT
InChI Key	VCESGVLABVSDRO-UHFFFAOYSA-L
Molecular Formula	C40H28Cl2N12O10

809

Crystal poncaeu 6R, 90%, MP Biomedicals™

CAS: 2766-77-0 Molecular Formula: C20H14N2Na2O7S2 Molecular Weight (g/mol): 504.44 MDL Number: MFCD00013279 InChI Key: AJCQNUXLYVWDGD-UHFFFAOYSA-N Synonym: Acid Red 44,Brilliant Crystal Scarlet PubChem CID: 88640932 IUPAC Name: 8-[2-(naphthalen-1-yl)hydrazin-1-ylidene]-7-oxo-7,8-dihydronaphthalene-1,3-disulfonic acid disodium SMILES: [Na].[Na].OS(=O)(=O)C1=CC(=C2C(C=CC(=O)C2=NNC2=CC=CC3=CC=CC=C23)=C1)S(O)(=O)=O

Pricing & Availability
Specifications

PubChem CID	88640932
CAS	2766-77-0
Molecular Weight (g/mol)	504.44
MDL Number	MFCD00013279
SMILES	[Na].[Na].OS(=O)(=O)C1=CC(=C2C(C=CC(=O)C2=NNC2=CC=CC3=CC=CC=C23)=C1)S(O)(=O)=O
Synonym	Acid Red 44,Brilliant Crystal Scarlet
IUPAC Name	8-[2-(naphthalen-1-yl)hydrazin-1-ylidene]-7-oxo-7,8-dihydronaphthalene-1,3-disulfonic acid disodium
InChI Key	AJCQNUXLYVWDGD-UHFFFAOYSA-N
Molecular Formula	C20H14N2Na2O7S2

810

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Thermo Scientific Chemicals Crocein Scarlet 7B, >70% dye content

CAS: 6226-76-2 Molecular Formula: C24H18N4Na2O7S2 Synonym: Acid Red 71; C.I. 27165

Pricing & Availability
Specifications

CAS	6226-76-2
Synonym	Acid Red 71; C.I. 27165
Molecular Formula	C24H18N4Na2O7S2

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