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Orthosiphol A
Orthosiphol A
ChemFaces products have been cited in many studies from excellent and top scientific journals
Product Name Orthosiphol A
Price: $318 / 5mg
CAS No.: 142741-25-1
Catalog No.: CFN95442
Molecular Formula: C38H44O11
Molecular Weight: 676.8 g/mol
Purity: >=98%
Type of Compound: Diterpenoids
Physical Desc.: Powder
Source: The branches of Platycladus orientalis
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download: COA    MSDS
Similar structural: Comparison (Web)  (SDF)
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* Packaging according to customer requirements(5mg, 10mg, 20mg and more). We shipped via FedEx, DHL, UPS, EMS and others courier.
According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
Size /Price /Stock 10 mM * 1 mL in DMSO / $413.4 / In-stock
Other Packaging *Packaging according to customer requirements(100uL/well, 200uL/well and more), and Container use Storage Tube With Screw Cap
Our products had been exported to the following research institutions and universities, And still growing.
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Related Screening Libraries
Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
10 mM * 1 mL in DMSO / Inquiry / In-stock
Related Libraries
Biological Activity
Description: Orthosiphol A showed a significant dose-dependent inhibitory effect on nitric oxide (NO) production in lipopolysaccharide (LPS)-activated macrophage-like J774.1 cells. Orthosiphol A has anticancer effects. Orthosiphol A selectively inhibited intestinal maltase with an IC5o, value of 6.54 mM.
In vitro:
J Nat Prod. 2001 May;64(5):592-596.
Five novel highly oxygenated diterpenes of Orthosiphon stamineus from Myanmar[Pubmed: 11374950]
Five novel highly oxygenated diterpenes, orthosiphols K (1), L (2), M (3), and N (4) and norstaminone A (5), were isolated from the aerial part of Orthosiphon stamineus, together with three known diterpenes, orthosiphols A (6) and B (7) and neoOrthosiphol A (8). Orthosiphol L (2) is an isopimarane-type diterpene with a hydroxyl group at C-12, which supports the biogenesis of staminane-type diterpenes, i.e., migration of a vinylic group from C-13 of isopimarane to C-12. Norstaminone A (5) has a staminane carbon framework and supports the biosynthetic pathway from staminols to norstaminols via staminolactones. All the isolated compounds showed mild to weak antiproliferative activities toward highly liver metastatic colon 26-L5 carcinoma and human HT-1080 fibrosarcoma cell lines.
Nat Prod Commun. 2014 May;9(5):639-641.
Orthosiphol A from the aerial parts of Orthosiphon aristatus is putatively responsible for hypoglycemic effect via alpha-glucosidase inhibition[Pubmed: 25026708]
An infusion of Orthosiphon aristatus has long been used for diabetes therapy; however, the active principles remained unknown. Herein, we report the identification of the putative agents responsible for this antidiabetic activity using an a-glucosidase-guided isolation. Four flavonoids named sinensetin (1), salvigenin (2), tetramethylscutellarein (3) and 3,7,4'-tri-O-methylkaempferol (4), together with a diterpenoid named Orthosiphol A (5), were characterized, based on analysis of their spectroscopic data. Flavonoids 3 and 4 inhibited yeast a-glucosidase with IC,o values of 6.34 and 0.75 mM, respectively, whereas Orthosiphol A (5) selectively inhibited intestinal maltase with an IC5o, value of 6.54 mM. A kinetic investigation of 5 indicated that it retarded maltase function in a noncompetitive manner.
Orthosiphol A Description
Source: The branches of Platycladus orientalis
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

Cell. 2018 Jan 11;172(1-2):249-261.e12.
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IF=36.216(2019)

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Cell Metab. 2020 Mar 3;31(3):534-548.e5.
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Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 1.4775 mL 7.3877 mL 14.7754 mL 29.5508 mL 36.9385 mL
5 mM 0.2955 mL 1.4775 mL 2.9551 mL 5.9102 mL 7.3877 mL
10 mM 0.1478 mL 0.7388 mL 1.4775 mL 2.9551 mL 3.6939 mL
50 mM 0.0296 mL 0.1478 mL 0.2955 mL 0.591 mL 0.7388 mL
100 mM 0.0148 mL 0.0739 mL 0.1478 mL 0.2955 mL 0.3694 mL
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
Protocol
Cell Research:
J Nat Prod . 2003 Feb;66(2):255-258.
Nitric oxide inhibitory isopimarane-type diterpenes from Orthosiphon stamineus of Indonesia[Pubmed: 12608860]
A methanolic extract of Orthosiphon stamineus yielded six new highly oxygenated isopimarane-type diterpenes, orthosiphols U-Z (1-6), and 15 previously reported diterpenes. The isolated diterpenes all showed significant dose-dependent inhibitory effects on the nitric oxide (NO) production in lipopolysaccharide (LPS)-activated macrophage-like J774.1 cells. Orthosiphols A (7), B (8), D (9), and X (4) showed more potent inhibitory activities than a positive control, N(G)-monomethyl-l-arginine (l-NMMA), and 1 displayed the strongest activity with an IC(50) value of 6.4 microM.
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