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| Activity Type | Activity Value -log(M) | Mechanism of Action | Activity Reference | Publications (PubMed IDs) |
|---|
Moligand™, 10mM in DMSO Moligand™ for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at -80°C Ships Dry ice packs + Cold packs Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 7 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Information
Methoxsalen (Xanthotoxin, NCI-C55903) is a naturally occurring photoactive substance found in the seeds of the Ammi majus (Umbelliferae) plant, used in the diagnosis and treatment of psoriasis; ACYP2A5/6inhibitor.
In vitro
Methoxsalen inhibits CYP2A6 (Ki = 0.8 μM) with about 3.5- 94-fold greater potency than other P450s, except for CYP1A2 (Ki = 0.2 μM). Methoxsalen shows noncompetitive inhibition of nicotine metabolism, with an apparent Ki value of 0.1 μM in cDNA-expressing microsomes. Methoxsalen is metabolized in human liver microsomes at the rate of 50-100 pmol/mg protein/min (approx. 30% of the activity in mouse liver microsomes). Methoxsalen is a very potent inhibitor of human cytochrome P450 2A6 (CYP2A6) and mouse Cyp2a-5-mediated coumarin 7-hydroxylation in vitro.
In vivo
Methoxsalen results in a significant decrease in the following factors: number and diameter of corpus lutei, Graafian follicles, diameter of granulosa cell layer and oocytes, number of primordial and primary and growing follicles, while the number of atretic follicle is increased. Methoxsalen also significantly reduces circulating estrogen levels in blood serum of oogenesis Balb/C mice. Methoxsalen dose-dependently stimulates a sustained increase in short-circuit current in the mouse jejunum. Methoxsalen increases the open probability of the basolateral IK(Ca) channel of isolated crypts in the mouse jejunum. Methoxsalen effectively reverses trimethyltin (TMT)-induced memory impairment on both Y-maze and passive avoidance tests in mice. Methoxsalen inhibits brain AchE activity. Methoxsalen significantly ameliorates the level of oxidative stress.
Cell Data
cell lines:D54 cells
Concentrations:
Incubation Time:
Powder Purity:≥99%
| ALogP | 1.9 |
|---|
| Isomere SMILES | COC1=C2C(=CC3=C1OC=C3)C=CC(=O)O2 |
|---|---|
| WGK Deutschland | 3 |
| RTECS | LV1400000 |
| Alternative CAS-Nummer | 298-81-7 |
| NSC-Nummer | 45923 |
| UN-Nummer | 1759 |
| Verpackungsgruppe | I |
| MeSH-Eintrag | 8 Methoxypsoralen;8 MOP;8-Methoxypsoralen;8-MOP;8MOP;Ammoidin;Deltasoralen;Dermox;Geroxalen;M\u00e9ladinine;Meladinina;Meladinine;Meloxine;Methoxa Dome;Methoxa-Dome;Methoxsalen;Oxsoralen;Oxsoralen Ultra;Oxsoralen-Ultra;Puvalen;Ultramop;Xanthotoxin |
| Molekulargewicht | 216.19 |
| Beilstein | 196453 |
| Reaxy-Rn | 196453 |
| Reaxys-RN_link_address | https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=196453&ln= |
Comprehensive hazard, handling, storage, and regulatory compliance document.
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Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →| Activity Type | Activity Value -log(M) | Mechanism of Action | Activity Reference | Publications (PubMed IDs) |
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| Activity Type | Activity Value -log(M) | Mechanism of Action | Activity Reference | Publications (PubMed IDs) |
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| Activity Type | Activity Value -log(M) | Mechanism of Action | Activity Reference | Publications (PubMed IDs) |
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| Activity Type | Activity Value -log(M) | Mechanism of Action | Activity Reference | Publications (PubMed IDs) |
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| Löslichkeit | Solubility (25°C) In vitro DMSO: 57 mg/mL (199.81 mM); Ethanol: -1 mg/mL |
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| Schmelzpunkt (°C) | 145℃-150℃ |
| 1. Fang Dong, Xin Chen, Xingyuan Men, Zhuo Li, Yujun Kong, Yiyang Yuan, Feng Ge. (2023) Contact Toxicity, Antifeedant Activity, and Oviposition Preference of Osthole against Agricultural Pests. Insects, 14 (9): (725). [PMID:37754693] [10.3390/insects14090725] |
| 2. Sun Yujing, Wang Yihua, Zhang Le, Ye Xingqian, Guo Jingtong. (2024) Furanocoumarin profiles and inhibitory effects on cytochrome P450 activity of whole citrus fruit. Food Quality and Safety, [PMID:] [10.1093/fqsafe/fyae038] |
| 3. Dandan Wang, Liangxiao Zhang, Yueqing Xu, Xin Qi, Xuefang Wang, Xiupin Wang, Qi Zhang, Peiwu Li. (2019) Optimization of an Ultrasound-Assisted Extraction for Simultaneous Determination of Antioxidants in Sesame with Response Surface Methodology. Antioxidants, 8 (8): (321). [PMID:31430991] [10.3390/antiox8080321] |
| 4. Yingying Liu, Guowen Zhang, Ni Zeng, Song Hu. (2016) Interaction between 8-methoxypsoralen and trypsin: Monitoring by spectroscopic, chemometrics and molecular docking approaches. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, [PMID:27653277] [10.1016/j.saa.2016.09.015] |
| 5. Na Li, Xialian Cui, Yingjie Lu, Fang Zhang, Su Guo, Yue Su, Yinlong Guo. (2025) Spatial distribution analysis of secondary metabolites in bolted and unbolted Saposhnikovia divaricata by atmospheric pressure laser ablation carbon fiber ionization mass spectrometry imaging. ANALYTICA CHIMICA ACTA, [PMID:40374248] [10.1016/j.aca.2025.344096] |
| 6. Deng Zhongyuan, Fang Liying, Cheng Lan, Yang Lihong, Zong Ruyi, Ding Qian, Wang Lixiang, Ni Xinzhi, Li Xianchun. (2025) Specialist/generalist divergence: phylogenetic constraints on the correlation between allelochemical tolerance spectra and host ranges of herbivorous insects. JOURNAL OF PEST SCIENCE, 99 (1): (10). [PMID:] [10.1007/s10340-025-02005-x] |
| 7. Xinye Shi, Hang Su, Jing Tang, Yajing Zhang, Songtao Li, Yanhui Zhong, Zian Lin. (2026) Covalent organic framework-based solid-phase microextraction coupled with electrospray ionization mass spectrometry for in vivo determination of furanocoumarins in citrus fruits. FOOD CHEMISTRY, [PMID:41499891] [10.1016/j.foodchem.2025.147841] |
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