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60730

Sigma-Aldrich

Khellin

for microscopy

Synonym(s):

4,9-Dimethoxy-7-methyl-5H-furo[3,2-g][1]benzopyran-5-one

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About This Item

Empirical Formula (Hill Notation):
C14H12O5
CAS Number:
82-02-0
Molecular Weight:
260.24
Beilstein/REAXYS Number:
263185
EC Number:
201-392-8
MDL number:
MFCD00005007
UNSPSC Code:
12171500
PubChem Substance ID:
329759173
NACRES:
MA.02

grade

for microscopy

Quality Level

100

assay

≥98.0% (HPLC)

form

powder

bp

180-200 °C/0.05 mmHg (lit.)

mp

150-154 °C (lit.)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

COc1c2OC(C)=CC(=O)c2c(OC)c3ccoc13

InChI

1S/C14H12O5/c1-7-6-9(15)10-11(16-2)8-4-5-18-12(8)14(17-3)13(10)19-7/h4-6H,1-3H3

InChI key

HSMPDPBYAYSOBC-UHFFFAOYSA-N

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pictograms

Skull and crossbones
GHS06

signalword

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
BCBJ3836V
BCBJ3836V
E405985/1V
405985/1
361845/1

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Sally S El-Nakkady et al.
Acta poloniae pharmaceutica, 69(4), 645-655 (2012-08-11)
Bromination of visnaginone (1) yielded the dibromo derivative (2), which upon methylation with methyl iodide gave 1-(2,7-dibromo-4,6-dimethoxybenzofuran-5-yl) ethanone (3). Compound (3) reacted with dimethylformamide dimethylacetal to give (4). The reaction of (3) with aromatic aldehydes namely (vanillin, benzaldehyde and 3-anisaldehyde)
Nishit S Patel et al.
Dermatologic surgery : official publication for American Society for Dermatologic Surgery [et al.], 38(3), 381-391 (2012-02-01)
Vitiligo is an acquired multifocal and polygenic dyschromia that affects 1% to 3% of the world and presents as multiple depigmented macules and patches. Traditionally, the treatment of vitiligo has focused on pharmacologic interventions, but nearly half of all treated
Karin G Haug et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 45(1-2), 79-89 (2011-11-17)
Ammi visnaga L. (syn. Khella, Apiaceae) preparations have traditionally been used in the Middle East for the treatment of kidney stone disease. Visnagin, a furanocoumarin derivative, is one of the main compounds of Ammi visnaga with potential effects on kidney
Omaima Mohamed Abdelhafez et al.
Archives of pharmacal research, 34(10), 1623-1632 (2011-11-15)
Bromination of visnagin (1) afforded 9-bromovisnagin (2) which on its alkaline hydrolysis afforded the 3-acetyl benzofuran derivative (3). The condensation of (3) with hydrazine hydrate, phenylhydrazine and/or hydroxylamine hydrochloride afforded the corresponding pyrazole derivatives (4a, b) and isoxazole derivative (4c).
Sameh El-Gogary et al.
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology, 5(3), 311-316 (2006-03-08)
One-photon ionization, leading to formation of hydrated electrons and radical cations, has been proposed as a possible mechanism of action of some sensitizers in photobiology. In this contribution, we have investigated this proposal for the compounds khellin and visnagin, used
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