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861324

Sigma-Aldrich

p-Rosolic acid

Dye content 84 %

Synonym(s):

4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone, Aurin

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About This Item

Empirical Formula (Hill Notation):
C19H14O3
CAS Number:
Molecular Weight:
290.31
Colour Index Number:
43800
Beilstein:
2055205
EC Number:
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47

form

powder

Quality Level

composition

Dye content, 84%

technique(s)

titration: suitable

pH

5.0-6.8, yellow to pink

cation traces

C: 66.0-90.8%

λmax

482 nm

ε (extinction coefficient)

≥11000 at 264-270 nm in ethanol
≥50000 at 478-486 nm in ethanol

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

O=C(C=C1)C=CC1=C(C2=CC=C(O)C=C2)C3=CC=C(O)C=C3

InChI

1S/C19H14O3/c20-16-7-1-13(2-8-16)19(14-3-9-17(21)10-4-14)15-5-11-18(22)12-6-15/h1-12,20-21H

InChI key

FYEHYMARPSSOBO-UHFFFAOYSA-N

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General description

p-Rosolic acid (C.I. 43800) is an acid-baseindicator from the triphenylmethane group. It is also known as aurin and 4-[Bis(4-hydroxyphenyl)methylene]-2,5-cyclohexadienone.

Application

p-Rosolic acid has been used to induce cellular stress in HEK293 cells.

Biochem/physiol Actions

The transition range of p-Rosolic acid is around pH 6.6-8.0 (Below this pH range it is yellow and above it red).

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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