Riboxin (IDP) is an orally bioavailable purine analogue inosin with antihypoxic and antihypertensive activities. Riboxin also has antiarrhythmic effects on Ouabain-induced cat/rabbit/mouse cardiac rhythm disorder models. Riboxin also protects animals from the harmful effects of gamma radiation.

Physicochemical Properties

Molecular Formula	C9H12N4O11P2
Molecular Weight	414.16
Exact Mass	521.959
CAS #	86-04-4
PubChem CID	135398651
Appearance	Typically exists as solid at room temperature
Density	2.49g/cm3
Boiling Point	925.2ºC at 760 mmHg
Flash Point	513.3ºC
Index of Refraction	1.883
LogP	-4
Hydrogen Bond Donor Count	6
Hydrogen Bond Acceptor Count	13
Rotatable Bond Count	6
Heavy Atom Count	27
Complexity	715
Defined Atom Stereocenter Count	4
SMILES	O=C1N=CNC2N(C3O[C@H](COP(OP(=O)(O)O)(O)=O)[C@@H](O)[C@H]3O)C=NC1=2
InChi Key	JPXZQMKKFWMMGK-KQYNXXCUSA-N
InChi Code	InChI=1S/C10H14N4O11P2/c15-6-4(1-23-27(21,22)25-26(18,19)20)24-10(7(6)16)14-3-13-5-8(14)11-2-12-9(5)17/h2-4,6-7,10,15-16H,1H2,(H,21,22)(H,11,12,17)(H2,18,19,20)/t4-,6-,7-,10-/m1/s1
Chemical Name	[(2R,3S,4R,5R)-3,4-dihydroxy-5-(6-oxo-1H-purin-9-yl)oxolan-2-yl]methyl phosphono hydrogen phosphate
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

ln Vivo	Oral ribofloxin (250 mg/kg; single dosage) prolongs mice's swimming time but has no discernible impact on their strength or endurance. In hot chamber studies, ribofloxin increased animal survival rates under the same circumstances [1]. In mice, ribozin (50 mg/kg; oral; once daily for 6 days) prolongs swimming duration without appreciably affecting running or swimming duration [1]. Mice exposed to gamma irradiation for one hour prior to the experiment benefit significantly from ribozin (250 mg/kg; oral; ref. 1) [1].
References	[1]. Adaptogenic effect of riboxin. Pharmaceutical Chemistry Journal, 1980, 14(1): 34-39. [2]. Experimental study of the antiarrhythmic effect of riboxin. Farmakol. Neirotropnykh Sredstv (1978), 119-24.
Additional Infomation	IDP is a purine ribonucleoside 5'-diphosphate having inosine as the nucleobase. It has a role as a fundamental metabolite. It is a purine ribonucleoside 5'-diphosphate and an inosine phosphate. It is a conjugate acid of an IDP(3-). Inosine diphosphate has been reported in Arabidopsis thaliana and Homo sapiens with data available. An inosine nucleotide containing a pyrophosphate group esterified to C5 of the sugar moiety.

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	2.4145 mL	12.0726 mL	24.1453 mL
	5 mM	0.4829 mL	2.4145 mL	4.8291 mL
	10 mM	0.2415 mL	1.2073 mL	2.4145 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.