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232726

8-Methoxypsoralen

99%

Synonym(s):

8-MOP, 9-Methoxyfuro[3,2-g][1]benzopyran-7-one, Ammoidin, Methoxsalen, Xanthotoxin

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About This Item

Empirical Formula (Hill Notation):
C12H8O4
CAS Number:
298-81-7
Molecular Weight:
216.19
EC Number:
206-066-9
UNSPSC Code:
12352100
MDL number:
MFCD00005009
Beilstein/REAXYS Number:
196453
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assay

99%

mp

148-150 °C (lit.)

SMILES string

COc1c2OC(=O)C=Cc2cc3ccoc13

InChI

1S/C12H8O4/c1-14-12-10-8(4-5-15-10)6-7-2-3-9(13)16-11(7)12/h2-6H,1H3

InChI key

QXKHYNVANLEOEG-UHFFFAOYSA-N

Biochem/physiol Actions

8-methoxypsoralen (8-MOP) plus ultraviolet A (UVA) irradiation induces monoadducts and interstrand cross-links in DNA and therefore can be used to study DNA repair and recombination mechanisms. Cultured normal human melanocytes treated with 8-methoxypsoralen and irradiated with ultraviolet A (UVA) formed 8-methoxypsoralen-phospholipid photoadducts that could be substituted for diacylglycerol to activate protein kinase C in a cell-free system. 8-MOP is an inactivator of purified reconstituted cytochrome P450. It also inhibits substance P-induced histamine release from substance P-activated rat peritoneal mast cells by suppressing the rise in [Ca2+].

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