Daphnin is one of the major coumarin bioactive components and has antimicrobial effect. Daphnin is extracted from Daphne odora. Daphne odora is a traditional Chinese medicine that relieves fever.

Physicochemical Properties

Molecular Formula	C15H16O9
Molecular Weight	340.28200
Exact Mass	340.079
CAS #	486-55-5
PubChem CID	439499
Appearance	Light brown to khaki solid powder
Density	1.679g/cm3
Boiling Point	670ºC at 760mmHg
Melting Point	216-217 °C
Flash Point	252.4ºC
Vapour Pressure	7.24E-19mmHg at 25°C
Index of Refraction	1.689
LogP	-0.6
Hydrogen Bond Donor Count	5
Hydrogen Bond Acceptor Count	9
Rotatable Bond Count	3
Heavy Atom Count	24
Complexity	495
Defined Atom Stereocenter Count	5
SMILES	C1=CC(=C(C2=C1C=CC(=O)O2)O)O[C@H]3[C@@H]([C@H]([C@@H]([C@H](O3)CO)O)O)O
InChi Key	HOIXTKAYCMNVMY-PVOAASPHSA-N
InChi Code	InChI=1S/C15H16O9/c16-5-8-10(18)12(20)13(21)15(23-8)22-7-3-1-6-2-4-9(17)24-14(6)11(7)19/h1-4,8,10,12-13,15-16,18-21H,5H2/t8-,10-,12+,13-,15-/m1/s1
Chemical Name	8-hydroxy-7-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxychromen-2-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 Note: This product requires protection from light (avoid light exposure) during transportation and storage.
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]. Investigation the interaction of Daphnin with human serum albumin using optical spectroscopy and molecular modeling methods. Spectrochim Acta A Mol Biomol Spectrosc. 2012 Sep;95:252-7. [2]. Isolation, characterisation and antibacterial activity studies of coumarins from Rhododendron lepidotum Wall. ex G. Don, Ericaceae. Rev. bras. farmacogn. vol.20 no.6 Curitiba Dec. 2010 Epub Nov 12, 2010.
Additional Infomation	Daphnin is a beta-D-glucoside. It is functionally related to a 7,8-dihydroxycoumarin. Daphnin has been reported in Daphne acutiloba, Stellera chamaejasme, and other organisms with data available.

Solubility Data

Solubility (In Vitro)

DMSO : ~33.33 mg/mL (~97.95 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (7.35 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 25.0 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 2: ≥ 2.5 mg/mL (7.35 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 25.0 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	2.9388 mL	14.6938 mL	29.3876 mL
	5 mM	0.5878 mL	2.9388 mL	5.8775 mL
	10 mM	0.2939 mL	1.4694 mL	2.9388 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.