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RG7800

Alias: RG7800; RO-6885247; RG-7800; RO6885247; RG 7800; RO 6885247
Cat No.:V5680 Purity: ≥98%
RG7800 (also known as RG-7800; RO6885247) is a potent and selective survival motor neuron 2 (SMN2) splicing modifier, which is currently being studies in human clinical trials for the treatment of Spinal Muscular Atrophy (SMA).
RG7800
RG7800 Chemical Structure CAS No.: 1449598-06-4
Product category: DNA(RNA) Synthesis
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

RG7800 (also known as RG-7800; RO6885247) is a potent and selective survival motor neuron 2 (SMN2) splicing modifier, which is currently being studies in human clinical trials for the treatment of Spinal Muscular Atrophy (SMA). The survival of motor neuron (SMN1) gene mutation or deletion is the genetic disorder known as SMA. It affects one out of every 10,000 live births, and in its most severe forms, it is linked to a high rate of mortality for children. Excellent pharmacokinetic and in vivo efficaciousness, along with a positive safety profile, characterize RG7800. In the brains of transgenic SMA model mice, RG7800 corrects alternative splicing of the human SMN2 gene, increasing the amount of SMN protein.

Biological Activity I Assay Protocols (From Reference)
ln Vitro
RG7800 stimulates alternative splicing of the SMN2 mRNA, which raises the amount of SMN protein. It has been demonstrated that RG7800 encourages the inclusion of exon 7 in SMN2 mRNA, producing full-length mRNA in vitro using fibroblasts from a patient with SMA type I[1].
ln Vivo
RG7800 indicates that the drug has a good oral bioavailability and a favorable pharmacokinetic profile in both rats and cynomolgus monkeys. Treatment with RG7800 clearly increases the levels of SMN protein in the SMA mouse model in a dose-dependent manner. Beginning at the low dose of 0.3/1 mg/kg, mice treated with RG7800 show a dose-dependent increase in survival. Approximately 80–90% of participants in the middle and high dose groups (1/3 and 3/10 mg/kg, respectively) survive past PND50/PND60 and have significantly increased body weight at the end of the study. It is possible that RG7800 corrects alternative splicing of the human SMN2 gene in the brains of transgenic SMA model mice, increasing the amount of SMN protein in the brain, by including exon 7 to produce FL mRNA, which corrects SMN2 splicing in a dose-dependent manner[1].
Animal Protocol
Mice: Oral administration of Compounds (RG7800) at three distinct doses (1, 3, and 10 mg/kg) is carried out once daily (qd) for ten days. Mice tissues are taken an hour after the last dose, and the amount of SMN protein in the brain and quadriceps muscle is measured[1].
References

[1]. Specific Correction of Alternative Survival Motor Neuron 2 Splicing by Small Molecules: Discovery of a Potential Novel Medicine To Treat Spinal Muscular Atrophy. J Med Chem. 2016 Jul 14;59(13):6086-100.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C24H28N6O
Molecular Weight
416.529
Exact Mass
416.23
Elemental Analysis
C, 69.21; H, 6.78; N, 20.18; O, 3.84
CAS #
1449598-06-4
Related CAS #
1449598-06-4
Appearance
Solid powder
SMILES
CCC1=NC(=CN2C1=CC(=N2)C3=CC(=O)N4C=C(C=C(C4=N3)C)C5CCN(CC5)C)C
InChi Key
GYFRQCMDLBNZSF-UHFFFAOYSA-N
InChi Code
InChI=1S/C24H28N6O/c1-5-19-22-11-21(27-30(22)13-16(3)25-19)20-12-23(31)29-14-18(10-15(2)24(29)26-20)17-6-8-28(4)9-7-17/h10-14,17H,5-9H2,1-4H3
Chemical Name
2-(4-ethyl-6-methylpyrazolo[1,5-a]pyrazin-2-yl)-9-methyl-7-(1-methylpiperidin-4-yl)pyrido[1,2-a]pyrimidin-4-one
Synonyms
RG7800; RO-6885247; RG-7800; RO6885247; RG 7800; RO 6885247
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)
Solubility Data
Solubility (In Vitro)
Ethanol: ~2.5 mg/mL (~6.0 mM)
DMSO: ~1.4 mg/mL (~3.4 mM)
H2O: ~1.3 mg/mL (~3.0 mM)
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 : PEG300Tween 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).
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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 : PEG300Tween 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).
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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 2.4008 mL 12.0039 mL 24.0079 mL
5 mM 0.4802 mL 2.4008 mL 4.8016 mL
10 mM 0.2401 mL 1.2004 mL 2.4008 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.

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What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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