Toringin, is a bioflavonoid extracted from the bark of Docyniopsis tschonoski. Toringin not only gradually reduces the cis effect of expanded CTG repeats but also reduces cell toxicity/cytotoxicity. Toringin protects PC12 neurons after exposure to isosakuranetin. Flavonoids improve the increase in functional RNA caused by expanded CTG repeats and have beneficial effects on cancer, coronary heart disease, and other conditions.

Physicochemical Properties

Molecular Formula	C21H20O9
Molecular Weight	416.3781
Exact Mass	416.11
CAS #	1329-10-8
PubChem CID	101686456
Appearance	White to yellow solid powder
LogP	0.7
Hydrogen Bond Donor Count	5
Hydrogen Bond Acceptor Count	9
Rotatable Bond Count	4
Heavy Atom Count	30
Complexity	646
Defined Atom Stereocenter Count	5
SMILES	C1=CC=C(C=C1)C2=CC(=O)C3=C(O2)C=C(C=C3OC4C(C(C(C(O4)CO)O)O)O)O
InChi Key	IRHAYEHCEVRWSB-QNDFHXLGSA-N
InChi Code	InChI=1S/C21H20O9/c22-9-16-18(25)19(26)20(27)21(30-16)29-15-7-11(23)6-14-17(15)12(24)8-13(28-14)10-4-2-1-3-5-10/h1-8,16,18-23,25-27H,9H2/t16-,18-,19+,20-,21-/m1/s1
Chemical Name	7-hydroxy-2-phenyl-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-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

References	[1]. Some flavonoids and DHEA-S prevent the cis-effect of expanded CTG repeats in a stable PC12 cell transformant. Biochem Pharmacol. 2005 Feb 1;69(3):503-16.
Additional Infomation	Toringin is a member of flavonoids and a glycoside. 7-Hydroxy-2-phenyl-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-4-one has been reported in Malus doumeri and Capsicum annuum with data available.

Solubility Data

Solubility (In Vitro)

DMSO : ~100 mg/mL (~240.17 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (6.00 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly. Solubility in Formulation 2: ≥ 2.08 mg/mL (5.00 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 3: ≥ 2.08 mg/mL (5.00 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. 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.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.4017 mL	12.0083 mL	24.0165 mL
	5 mM	0.4803 mL	2.4017 mL	4.8033 mL
	10 mM	0.2402 mL	1.2008 mL	2.4017 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.