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200239

Sigma-Aldrich

Azure B eosinate

Linear Formula:
C20H6Br4O5 ⋅ 2C15H16N3S
CAS Number:
Molecular Weight:
1186.62
EC Number:
PubChem Substance ID:
NACRES:
NA.47

form

powder or crystals

Quality Level

solubility

acetic acid: 1 mg/mL

λmax

523 nm (2nd)
636 nm

ε (extinction coefficient)

≥142400 at 635-641 nm in methanol at 0.005 g/L
≥47500 at 241-247 nm in methanol at 0.005 g/L
≥82000 at 521-527 nm in methanol at 0.005 g/L
≥94900 at 286-292 nm in methanol at 0.005 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

BrC1=CC2=C(C(Br)=C1[O-])OC3=C(C=C(Br)C([O-])=C3Br)C24OC(C5=C4C=CC=C5)=O.C[N+](C)=C(C=C6)C=C(C6=N7)SC8=C7C=CC(NC)=C8.C[N+](C)=C(C=C9)C=C(C9=N%10)SC%11=C%10C=CC(NC)=C%11

InChI

1S/C20H8Br4O5.2C15H15N3S/c21-11-5-9-17(13(23)15(11)25)28-18-10(6-12(22)16(26)14(18)24)20(9)8-4-2-1-3-7(8)19(27)29-20;2*1-16-10-4-6-12-14(8-10)19-15-9-11(18(2)3)5-7-13(15)17-12/h1-6,25-26H;2*4-9H,1-3H3

InChI key

NCBQBFXQRBYYGY-UHFFFAOYSA-N

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This Item
A4043A6270200212
Azure B eosinate

Sigma-Aldrich

200239

Azure B eosinate

Azure B certified by the Biological Stain Commission

Sigma-Aldrich

A4043

Azure B

Azure A chloride Dye content ≥70 %

Sigma-Aldrich

A6270

Azure A chloride

Azure A eosinate

Sigma-Aldrich

200212

Azure A eosinate

solubility

acetic acid: 1 mg/mL

solubility

H2O: 1 mg/mL

solubility

water: 1 mg/mL

solubility

-

λmax

523 nm (2nd), 636 nm

λmax

-

λmax

-

λmax

522 nm (2nd), 628 nm

ε (extinction coefficient)

≥142400 at 635-641 nm in methanol at 0.005 g/L, ≥47500 at 241-247 nm in methanol at 0.005 g/L, ≥82000 at 521-527 nm in methanol at 0.005 g/L, ≥94900 at 286-292 nm in methanol at 0.005 g/L

ε (extinction coefficient)

-

ε (extinction coefficient)

-

ε (extinction coefficient)

-

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

storage temp.

room temp

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Jordan R Jensen et al.
Bioorganic & medicinal chemistry, 19(17), 5147-5154 (2011-08-02)
Whole brain imaging of tau-bearing neurofibrillary lesions has the potential to improve the premortem diagnosis and staging of Alzheimer's disease. Diverse compounds with high affinity for tau aggregates have been reported from high-throughput screens, but the affinity driving features common

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