For research use only. We do not sell to patients.
Ionizable lipids / Cl-4A3-LNSC8
Cl-4A3-LNSC8 chemical structure
Product imageResearch use only
CAT. NO. DC67989Featured

Cl-4A3-LNSC8

Ionizable lipid for LNP and nucleic-acid delivery research.

Pack size & price

USD
TotalPrice on request
We match the best price and quality on market.
Ships from ShanghaiIce-pack transportPure lipid recommended
Product overview

Description & Application

Cl-4A3-LNSC8​ represents a novel class of thiourea-functionalized ionizable lipids engineered for selective organ-targeted mRNA delivery. Its core innovation lies in an anion-coordination strategy, where the parent lipid, 4A3-LNSC8, binds chloride ions (Cl⁻) via hydrogen-bonding interactions with its thiourea groups. This binding event is not merely structural but functionally critical, as it induces a significant shift in the surface pKa of the resulting lipid nanoparticles (LNPs) from approximately 5.54 to 8.79. This pKa modulation is the key mechanism that redirects the organotropism of the LNPs upon systemic administration. While the unmodified 4A3-LNSC8 LNPs preferentially deliver mRNA to the liver, Cl-4A3-LNSC8 LNPs effectivelyreprogram this tropism, enabling highly efficient mRNA delivery to secondary lymphoid organs (SLOs), particularly the spleen and lymph nodes. This platform demonstrates remarkable efficacy, achieving up to 65.7% gene editing efficiency in splenic macrophages in vivo, significantly outperforming benchmark delivery systems. Furthermore, by leveraging the coordination with different halides, such as iodine for computed tomography (CT) contrast, the system can be adapted for dual-modal theranostic applications, enabling simultaneous lymphatic metastasis imaging and therapeutic mRNA delivery.

CAS No.Not available
Chemical NameCl-4A3-LNSC8
SynonymsCl 4A3 LNSC8
SMILESCCCCCCCCSCC(C)C(=O)OCCNC(=S)NCCOC(=O)CCN(CCCN(C)CCCN(CCC(=O)OCCNC(=S)NCCOC(=O)C(C)CSCCCCCCCC)CCC(=O)OCCN1[Cl-]N(CCOC(=O)C(C)CSCCCCCCCC)C1=S)CCC(=O)OCCNC(=S)NCCOC(=O)C(C)CSCCCCCCCC
FormulaC87H163O16ClN11S8-
M.Wt1,911.25
PurityELSD-HPLC>95%
StoragePure form: −20 °C, 1 year; In solvent: −80 °C, 6 months; −20 °C, 1 month. Sealed and protected from light.
Shipping conditionShips from Shanghai. Pure lipid is stable during ice-pack transport.
PublicationNot available
Laboratory planning

Solution Calculators

The product molecular weight is prefilled when available and remains editable. Confirm solvent compatibility and solubility before preparation.

Mass = concentration × volume × molecular weight
Enter any three values to calculate the fourth.
C₁V₁ = C₂V₂
Enter any three values to calculate the fourth.
Preparing stock solutions

Quick preparation table

Solvent volumes update from the molecular weight above.

Mass1 mM5 mM10 mM
10 mg5.2322 mL1.0464 mL523.22 μL
25 mg13.0804 mL2.6161 mL1.3080 mL
50 mg26.1609 mL5.2322 mL2.6161 mL
100 mg52.3218 mL10.4644 mL5.2322 mL
250 mg130.8044 mL26.1609 mL13.0804 mL

Need a different pack size or technical document?

Contact our team with the catalog number and requested quantity.

Contact us
Handling guidance

Shipping, storage and sampling

How is the lipid shipped, and how should I store it?
We generally ship the neat (undissolved) lipid compound rather than an ethanol solution. The neat lipid is stable during transport with ice packs, and shipments originate from Shanghai. Pure form: store at −20 °C for up to 1 year. In solvent: store at −80 °C for up to 6 months or at −20 °C for up to 1 month. Keep sealed and protected from light. Avoid repeated thaw cycles for best results.
Pure lipid or solution — which should I choose?
Pure lipid is generally more stable during shipping and storage, so we usually recommend the pure form. A solution in ethanol or chloroform can be supplied when required by your workflow. Tell us the intended application, solvent and target concentration so the most suitable format can be confirmed.
How should I measure a small amount of oily or viscous lipid?
Ionizable lipids are often oily liquids or viscous semisolids, so material can be lost during repeated weighing or transfer. For a small pack, dissolve the entire quantity and aliquot it volumetrically. For example, add 1 mL ethanol to 25 mg lipid to prepare a 25 mg/mL stock, then use a pipette to withdraw the required amount. For quantities above 100 mg, direct weighing with an analytical balance may be more practical. Always confirm solvent compatibility and solubility first.
Can you support formulation optimization and scale-up?
Yes. Share the RNA cargo, target tissue, administration route, formulation method and assay plan. Our team can discuss starting molar ratios, N/P ratio and scale-up requirements for research workflows.