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Ombuin
ChemFaces products have been cited in many studies from excellent and top scientific journals
Product Name Ombuin
Price:
CAS No.: 529-40-8
Catalog No.: CFN98876
Molecular Formula: C17H14O7
Molecular Weight: 330.3 g/mol
Purity: >=98%
Type of Compound: Flavonoids
Physical Desc.: Yellow powder
Source: The heartwoods of Caesalpinia sappan L.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download: COA    MSDS    SDF    Manual
Similar structural: Comparison (Web)  (SDF)
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Citing Use of our Products
* 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 / Inquiry
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.
  • Weizmann Institute of Science (Israel)
  • University of Beira Interior (Portugal)
  • Washington State University (USA)
  • Warszawski Uniwersytet Medyczny (Poland)
  • University of Indonesia (Indonesia)
  • University of Mysore (India)
  • Monash University (Australia)
  • Melbourne University (Australia)
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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: Ombuin has anti-inflammary activity, it inhibits some macrophage functions involved in the inflammatory process. Ombuin significantly and dose dependently inhibits lipopolysaccharide (LPS) and interferon (IFN)-gamma induced nitric oxide (NO), and cytokines [tumor necrosis factor (TNF)-alpha and interleukin (IL)-12].
Targets: NO | IFN-γ | IL Receptor | TNF-α
In vitro:
Phytother Res. 2008 Jul;22(7):957-62.
Antiinflammatory activities of flavonoids and a triterpene caffeate isolated from Bauhinia variegata.[Pubmed: 18384188]
In the continuing search for novel antiinflammatory agents, six flavonoids, namely kaempferol (1), Ombuin (2), kaempferol 7,4'-dimethyl ether 3-O-beta-D-glucopyranoside (3), kaempferol 3-O-beta-D-glucopyranoside (4), isorhamnetin 3-O-beta-D-glucopyranoside (5) and hesperidin (6), together with one triterpene caffeate, 3beta-trans-(3,4-dihydroxycinnamoyloxy)olean-12-en-28-oic acid (7) were isolated from the non-woody aerial parts of Bauhinia variegata.
METHODS AND RESULTS:
Compounds 1-7 were evaluated as inhibitors of some macrophage functions involved in the inflammatory process. These seven compounds significantly and dose dependently inhibited lipopolysaccharide (LPS) and interferon (IFN)-gamma induced nitric oxide (NO), and cytokines [tumor necrosis factor (TNF)-alpha and interleukin (IL)-12]. The concentration causing a 50% inhibition (IC50) of NO, TNF-alpha and IL-12 production by compounds 1, 2 and 7 was approximately 30, 50 and 10 microM, respectively, while at 50, 200 and 40 microM compounds 3, 4, and 5, 6 showed 15-30% inhibition, respectively. On the other hand, compounds 3 and 7 showed no inhibitory effect, while compounds 1, 4-6 reduced by around 10-30% the synthesis of NO by macrophages, when inducible NO synthase was already expressed with LPS/IFN-gamma for 24 h.
CONCLUSIONS:
These experimental findings lend pharmacological support to the suggested folkloric uses of the plant B. variegata in the management of inflammatory conditions.
Planta Med. 1998 Jun;64(5):464-6.
Licochalcone A: an inducer of cell differentiation and cytotoxic agent from Pogostemon cablin.[Pubmed: 9690352]
Licochalcone A (1), Ombuin (2), and 5,7-dihydroxy-3',4'-dimethoxyflavanone (3) were isolated from the aerial parts of Pogostemon cablin by cytotoxicity-guided fractionation.
METHODS AND RESULTS:
Compound 1 showed in vitro cytotoxicity and Pl-PLC gamma 1 inhibition activity. Treatment of promyelocytic leukemia cells (HL-60) with compound 1 induced terminal differentiation with the generation of monocyte using nonspecific acid esterase assay.
Ombuin Description
Source: The heartwoods of Caesalpinia sappan L.
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.
doi: 10.1016/j.cell.2017.12.019.
IF=36.216(2019)

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Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.0276 mL 15.1378 mL 30.2755 mL 60.551 mL 75.6888 mL
5 mM 0.6055 mL 3.0276 mL 6.0551 mL 12.1102 mL 15.1378 mL
10 mM 0.3028 mL 1.5138 mL 3.0276 mL 6.0551 mL 7.5689 mL
50 mM 0.0606 mL 0.3028 mL 0.6055 mL 1.211 mL 1.5138 mL
100 mM 0.0303 mL 0.1514 mL 0.3028 mL 0.6055 mL 0.7569 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.
Alisol A

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CAS No: 19885-10-0
Price: $80/20mg
Napellonine

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Price: $218/20mg
Magnolol

Catalog No: CFN98872
CAS No: 528-43-8
Price: $30/20mg
Moschamine

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Psoralen

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