Cudraflavone B is a prenylated flavonoid with anti-inflammatory and anti-cancer properties. Cudraflavone B is also a dual (bifunctional) inhibitor of COX-1 and COX-2. Cudraflavone B blocks the translocation of nuclear factor kappa B (NF-κB) from the cytoplasm to the nucleus in macrophages. Thus, Cudraflavone B also inhibits tumor necrosis factor alpha (TNFα) gene expression and secretion. Cudraflavone B also triggers the mitochondrial apoptotic pathway, activates NF-κB, MAPK p38 and ERK, and induces the expression of SIRT1. Thus, Cudraflavone B suppresses the growth of human oral squamous cell carcinoma cells.

Physicochemical Properties

Molecular Formula	C25H24O6
Molecular Weight	420.45
Exact Mass	420.157
CAS #	19275-49-1
PubChem CID	5319925
Appearance	Typically exists as solid at room temperature
LogP	5.269
Hydrogen Bond Donor Count	3
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	3
Heavy Atom Count	31
Complexity	805
Defined Atom Stereocenter Count	0
SMILES	O1C2C([H])=C3C(C(C(C([H])([H])/C(/[H])=C(\C([H])([H])[H])/C([H])([H])[H])=C(C4C([H])=C([H])C(=C([H])C=4O[H])O[H])O3)=O)=C(C=2C([H])=C([H])C1(C([H])([H])[H])C([H])([H])[H])O[H]
InChi Key	XIWCDUHPYMOFIL-UHFFFAOYSA-N
InChi Code	InChI=1S/C25H24O6/c1-13(2)5-7-17-23(29)21-20(30-24(17)15-8-6-14(26)11-18(15)27)12-19-16(22(21)28)9-10-25(3,4)31-19/h5-6,8-12,26-28H,7H2,1-4H3
Chemical Name	8-(2,4-dihydroxyphenyl)-5-hydroxy-2,2-dimethyl-7-(3-methylbut-2-enyl)pyrano[3,2-g]chromen-6-one
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Targets	NF-κB COX-2 COX-1 TNFRSF1A p38 MAP kinase ERK SIRT1
References	[1]. Natural compound cudraflavone B shows promising anti-inflammatory properties in vitro. J Nat Prod. 2011 Apr 25;74(4):614-9. [2]. Growth inhibition and apoptosis-inducing effects of cudraflavone B in human oral cancer cells via MAPK, NF-κB, and SIRT1 signaling pathway. Planta Med. 2013 Sep;79(14):1298-306.
Additional Infomation	Cudraflavone B is an extended flavonoid that consists of a pyranochromane skeleton that is 2H,6H-pyrano[3,2-g]chromen-6-one substituted by geminal methyl groups at position 2, a 2,4-dihydroxyphenyl group at position 8, a hydroxy group at position 5 and a prenyl group at position 7. Isolated from Morus alba and Morus species it exhibits anti-inflammatory activity. It has a role as an anti-inflammatory agent and a plant metabolite. It is an extended flavonoid, a pyranochromane and a trihydroxyflavone. cudraflavone B has been reported in Artocarpus altilis, Brosimum lactescens, and other organisms with data available.

Solubility Data

Solubility (In Vitro)

May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples

Solubility (In Vivo)

Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.3784 mL	11.8920 mL	23.7840 mL
	5 mM	0.4757 mL	2.3784 mL	4.7568 mL
	10 mM	0.2378 mL	1.1892 mL	2.3784 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.