Lipid A1-EP10-O18A
Instructions for Use
Product information
A1-EP10-O18A is an asymmetric ionizable lipid developed by Starna Therapeutics for mRNA vaccine delivery. Synthesized via Michael addition between amine alcohols and acrylates, its optimized structure—combining a hydrophilic C10 chain and hydrophobic unsaturated C18 tail—enables pH-dependent ionization. As the core component of the STAR0225 lipid nanoparticle (LNP) platform, it efficiently encapsulates mRNA and facilitates endosomal escape. Preclinical studies demonstrate superior in vivo mRNA delivery (vs. commercial SM102 LNPs), with enhanced local biodistribution and minimal off-target accumulation. This lipid underpins STR-V003, an RSV prefusion F mRNA vaccine showing robust immunogenicity and protection in animal models, supporting its clinical transition (NCT06344975).
| CAS No. | Not available |
| Chemical Name | Lipid A1-EP10-O18A |
| Formula | C79H145O7N3 |
| M.Wt | 1,249.04 |
| Purity | >98% |
| Storage | Original product: up to 1 year under the storage conditions stated on the vial, kept tightly sealed. Stock solutions: aliquots at -20°C, generally up to one month. |
| Shipping condition | Ships from Shanghai. Pure lipid is stable during ice-pack transport. |
Formulation & study context
Literature information refers to the cited study and its particular formulation. Administration routes are research context, not clinical instructions or a guarantee of performance.
A complete product-specific formulation has not been verified. No standard ratio is substituted.
| N/P ratio | Not reported in the verified record |
| Cargo | Not available in the verified record |
| Administration route | Not available in the verified record |
| Animal model | Not available in the verified record |
| Formulation process | Not available in the verified record |
N/P is the molar ratio of specified lipid nitrogen groups to nucleic-acid phosphate groups. A lipid:cargo mass ratio is a different quantity and must not be used as N/P.
Stock-solution preparation table
Calculated from the product-page molecular weight: 1249.04 g/mol. Volumes are final solution volumes.
| Lipid mass | 1 mM | 5 mM | 10 mM |
|---|---|---|---|
| 10 mg | 8.006 mL | 1.601 mL | 0.801 mL |
| 25 mg | 20.015 mL | 4.003 mL | 2.002 mL |
| 50 mg | 40.031 mL | 8.006 mL | 4.003 mL |
| 100 mg | 80.061 mL | 16.012 mL | 8.006 mL |
| 250 mg | 200.154 mL | 40.031 mL | 20.015 mL |
Volume (mL) = mass (mg) × 1000 / [MW (g/mol) × concentration (mM)]. These are mathematical conversions, not measured solubility or validated solvent recommendations. Confirm solvent compatibility and the molecular weight of the exact material before use.
Open editable solution calculators →Handling & storage
Provided that storage conditions are as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 1 year.
Wherever possible, prepare and use solutions on the same day. If stock solutions must be prepared in advance, store them as aliquots in tightly sealed vials at -20°C. Generally, these will be usable for up to one month.
Before use, and prior to opening the vial, allow the product to equilibrate to room temperature for at least 1 hour.
References
Not available