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200239

Sigma-Aldrich

Azure B eosinate

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About This Item

Linear Formula:
C20H6Br4O5 ⋅ 2C15H16N3S
CAS Number:
62298-42-4
Molecular Weight:
1186.62
EC Number:
263-490-7
UNSPSC Code:
12171500
PubChem Substance ID:
24851353
NACRES:
NA.47

form

powder or crystals

Quality Level

100

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

Related Categories

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
SHBS1480
SHBN4139
SHBM2773
SHBM2122
SHBL6800

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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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