1417001

Methoxsalen

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): 8-Methoxypsoralen, 8-MOP, 9-Methoxyfuro[3,2-g][1]benzopyran-7-one, Ammoidin, Methoxsalen, Xanthotoxin
• Empirical Formula (Hill Notation): C₁₂H₈O₄
• CAS Number: 298-81-7
• Molecular Weight: 216.19
• Beilstein: 196453
• MDL number: MFCD00005009
• UNSPSC Code: 41116107
• PubChem Substance ID: 329750415
• NACRES: NA.24

Properties

• grade: pharmaceutical primary standard
• API family: methoxsalen
• manufacturer/tradename: USP
• mp: 148-150 °C (lit.)
• application(s): pharmaceutical (small molecule)
• format: neat
• 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

Description

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

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⁺].

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety Information

• Pictograms: GHS07,GHS08
• Signal Word: Warning
• Hazard Statements: H302 - H317 - H341 - H351
• Precautionary Statements: P202 - P261 - P280 - P301 + P312 - P302 + P352 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Carc. 2 - Muta. 2 - Skin Sens. 1
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable