Ombuin | CAS:529-40-8 | Manufacturer ChemFaces

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.

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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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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.

Product Name	Ombuin
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
Targets:	NO \| IFN-γ \| IL Receptor \| TNF-α
Source:	The heartwoods of Caesalpinia sappan L.
Solvent:	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Price: