81-54-9

Name	PURPURIN
CAS	81-54-9
EINECS(EC#)	201-359-8
Molecular Formula	C14H8O5
MDL Number	MFCD00001203
Molecular Weight	256.21
MOL File	81-54-9.mol

Chemical Properties

Appearance	brown-red to brown powder
Melting point	253-256 °C(lit.)
Boiling point	359.45°C (rough estimate)
density	1.659
refractive index	1.4825 (estimate)
Fp	113 °C
storage temp.	Inert atmosphere,Room Temperature
solubility	DMSO (Slightly), Methanol (Slightly, Heated)
Colour Index	58205
form	Powder
pka	7.05±0.20(Predicted)
color	Brown-red to brown
Water Solubility	6.405mg/L(25 ºC)
Merck	14,7945
BRN	1887127
LogP	4.600 (est)
CAS DataBase Reference	81-54-9
EPA Substance Registry System	Purpurin (81-54-9)

Safety Data

Hazard Codes	Xi,C,F
Risk Statements	36/37/38-34-11 less more
Safety Statements	26-36-45-36/37/39-16 less more
WGK Germany	3
RTECS	CB8200000
HS Code	29146990

Hazard Information

Chemical Properties

brown-red to brown powder

Uses

A xanthine oxidase inhibitor.

Uses

Purpurin is an anthraquinone derivative and is well known as a colour pigment derived from madder plants. Purpurin was extensively utilized in herbal remedies, in food colouring and dyes for cotton pr inting. Due to the high antioxidant activity exhibited by anthraquinone compounds, purpurin was determined through studies to possess potential radical scavenging effects. Purprin has also been shown to have inhibitory effects towards serine protease.

Uses

xanthin oxidase inhibitor, irritant

Definition

ChEBI: A trihydroxyanthraquinone derived from anthracene by substitution with oxo groups at C-9 and C-10 and with hydroxy groups at C-1, C-2 and C-4.

Uses

Purpurin is a naturally occurring reddish-yellow pigment found in madder root (R. tinctorum) that has been used both in herbal remedies and as food coloring. It can also by synthetically derived from 9,10-anthraquinone. Purpurin is protective against a number of food-derived heterocyclic amines in bacterial mutagenicity assays through its inhibition of CYP450-dependent N-hydroxylation and reduction of N-hydroxylamines. Purpurine can also inhibit (IC50 = 6.6 μM) spermidine-induced autoactivation of plasma hyaluronan-binding protein, a serine protease that can activate coagulation factor VII and prourokinase.

storage

4°C, protect from light

Purification Methods

Crystallise purpurin from aqueous EtOH, dry it at 100o. [Beilstein 8 IV 3568.]

Spectrum Detail

Supplier

J & K SCIENTIFIC LTD.

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