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2-Di-1-ASP

Cat No.:V40646 Purity: ≥98%
2-Di-1-ASP (DASPI; Compound 18a) is a monostyrene dye extensively used as a mitochondrial stain of double-stranded DNA and as a groove-binding fluorescent probe.
2-Di-1-ASP
2-Di-1-ASP Chemical Structure CAS No.: 2156-29-8
Product category: New2
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
100mg
Other Sizes
Official Supplier of:
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Product Description
2-Di-1-ASP (DASPI; Compound 18a) is a monostyrene dye extensively used as a mitochondrial stain of double-stranded DNA and as a groove-binding fluorescent probe. 2-Di-1-ASP is selective for G-quadruplexes (G4) and double-stranded DNA.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
2-Di-1-ASP (compound 18a) has good selectivity for double-stranded DNA and shows a notable fluorescence enhancement (up to 300-fold) in the presence of G-quadruplex (G4) structure. For parallel G4-DNA forms (c-kit2, c-kit87up, and c-myc), 2-Di-1-ASP exhibits fluorescence selectivity [1].
References

[1]. Identification of optimal fluorescent probes for G-quadruplex nucleic acids through systematic exploration of mono- and distyryl dye libraries. Beilstein J Org Chem. 2019 Aug 6;15:1872-1889.

Additional Infomation
2-[4-(dimethylamino)styryl]-1-methylpyridinium iodide is a pyridinium salt, a tertiary amine and an organic iodide salt. It has a role as a fluorochrome. It contains a 2-[4-(dimethylamino)styryl]-1-methylpyridinium.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C16H19N2+.I-
Molecular Weight
366.23946
Exact Mass
366.059
CAS #
2156-29-8
PubChem CID
5463010
Appearance
Pink to red solid powder
Density
1.091g/cm3
Boiling Point
397.8℃at 760 mmHg
Melting Point
280ºC (dec.)(lit.)
Flash Point
179.3℃
Vapour Pressure
1.55E-06mmHg at 25°C
Index of Refraction
1.668
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
2
Rotatable Bond Count
3
Heavy Atom Count
19
Complexity
264
Defined Atom Stereocenter Count
0
SMILES
C[N+]1=CC=CC=C1/C=C/C2=CC=C(C=C2)N(C)C.[I-]
InChi Key
XPOIQAIBZGSIDD-UHFFFAOYSA-M
InChi Code
InChI=1S/C16H19N2.HI/c1-17(2)15-10-7-14(8-11-15)9-12-16-6-4-5-13-18(16)3;/h4-13H,1-3H3;1H/q+1;/p-1
Chemical Name
N,N-dimethyl-4-[(E)-2-(1-methylpyridin-1-ium-2-yl)ethenyl]aniline;iodide
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: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture and light.
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)
DMSO : ~25 mg/mL (~68.26 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.08 mg/mL (5.68 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 2: ≥ 2.08 mg/mL (5.68 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 2.7304 mL 13.6522 mL 27.3045 mL
5 mM 0.5461 mL 2.7304 mL 5.4609 mL
10 mM 0.2730 mL 1.3652 mL 2.7304 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.

Calculator

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An example of molarity calculation using the molarity calculator is shown below:
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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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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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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