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A structure-first resource for LNP research

Ester Lipid Structures

Browse 1,584 entries collected under the ester classification, with structures, source patent links, molecular properties and linker annotations.

18,363Distinct structures · combined
155Patent publication labels
42LNPDB literature sources
19,528LNPDB experimental records
One library. Traceable patent and literature sources.
More filters: linker type, publication year & molecular weight
1,584 entries

Click a structure to browse its details, source annotations and patent provenance. Patent and property information is reproduced from the collected records.

KetalCN111909020A
Chemical structure for CAS 1226780-55-7

CAS 1226780-55-7

ARBUTUS BIOPHARMA
Molecular formulaC47H83NO4
MW · source (g/mol)726.17
View patent ↗
KetalCN111909020A
Chemical structure for CAS 1226780-53-5

CAS 1226780-53-5

ARBUTUS BIOPHARMA
Molecular formulaC48H85NO4
MW · source (g/mol)740.19
View patent ↗
KetalCN111909020A
Chemical structure for CAS 1226892-79-0

CAS 1226892-79-0

ARBUTUS BIOPHARMA
Molecular formulaC47H83NO4
MW · source (g/mol)726.17
View patent ↗
KetalCN111909020A
Chemical structure for CAS 1226892-80-3

CAS 1226892-80-3

ARBUTUS BIOPHARMA
Molecular formulaC48H85NO4
MW · source (g/mol)740.19
View patent ↗
AmideUS8759499B2
Chemical structure for CAS 956464-32-7

CAS 956464-32-7

THERMO FISHER SCIENTIFIC INC
Molecular formulaC39H76N2O5.2ClH
MW · source (g/mol)725.95
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AmideUS8759499B2
Chemical structure for CAS 956464-31-6

CAS 956464-31-6

THERMO FISHER SCIENTIFIC INC
Molecular formulaC38H74N2O5.2ClH
MW · source (g/mol)711.93
View patent ↗
AmideUS8759499B2
Chemical structure for CAS 956464-28-1

CAS 956464-28-1

THERMO FISHER SCIENTIFIC INC
Molecular formulaC42H83N5O5.2ClH
MW · source (g/mol)811.06
View patent ↗
AmideUS8759499B2
Chemical structure for CAS 193559-42-1

CAS 193559-42-1

THERMO FISHER SCIENTIFIC INC
Molecular formulaC41H81N3O5.2ClH
MW · source (g/mol)769.02
View patent ↗
AmideUS8759499B2
Chemical structure for CAS 193559-38-5

CAS 193559-38-5

THERMO FISHER SCIENTIFIC INC
Molecular formulaC42H83N3O5.2ClH
MW · source (g/mol)783.05
View patent ↗
AmideUS8759499B2
Chemical structure for CAS 956464-33-8

CAS 956464-33-8

THERMO FISHER SCIENTIFIC INC
Molecular formulaC42H78N4O5.2ClH
MW · source (g/mol)792.02
View patent ↗
AmideUS8759499B2
Chemical structure for CAS 193559-45-4

CAS 193559-45-4

THERMO FISHER SCIENTIFIC INC
Molecular formulaC37H73N3O5.2ClH
MW · source (g/mol)712.92
View patent ↗
AmideUS8759499B2
Chemical structure for CAS 193559-44-3

CAS 193559-44-3

THERMO FISHER SCIENTIFIC INC
Molecular formulaC38H75N3O5.2ClH
MW · source (g/mol)726.94
View patent ↗
Explore the chemistry. Trace the source.

About the patent collection

This collection brings together patent-associated lipid structures for researchers exploring LNP chemistry. Browse molecular structures alongside CAS numbers, molecular formulas, molecular weights, company and institution labels, patent identifiers, source years, and linker annotations. Each entry links to its listed patent publication.

The 8,673 source rows have been consolidated into 5,637 entries representing 5,635 distinct structures. Identical rows appearing in several worksheets are grouped, with every worksheet and row location retained. Structure diagrams are generated from the supplied SMILES, preserving stated stereochemistry and disconnected components. Names, classifications, company labels and year fields reflect the source collection; consult the linked patent document for its original bibliographic information. This is a collected reference set, not an exhaustive or current census of all lipid patents.

Browse the 78 patent publications in this view
LNPDB · Source attribution & scope

From published structures to experimental context

What is included

This edition includes all 19,797 records in the author-provided LNPDB CSV: 19,528 experimental records from 42 studies and 269 catalog records. The 12,845 distinct submitted SMILES normalize to 12,837 exact structures. Every source record and all 66 original fields are retained. The LNPDB study collection described in the paper is current to August 2025; its 2026 publication date does not imply coverage of all 2026 studies.

There are 109 exact structure matches with the existing patent collection. Across both collections, this edition contains 18,363 distinct structures. Patent records and literature records retain their own provenance.

How to interpret the data

Different studies use different assays, normalization and dose conventions. Readouts are displayed with their method and experimental context; values should not be used as a universal efficacy ranking. A target label describes the experiment and does not by itself establish organ selectivity. Catalog records have no experimental formulation or delivery result.

Original SMILES, source values and record identifiers are preserved. Structure grouping uses canonical isomeric SMILES without neutralizing charges or assigning missing stereochemistry. This integration has not independently revalidated every structure and assay against its original publication.

Dataset citation: Collins E, Ji J, Kim SG, et al. Lipid Nanoparticle Database towards structure-function modeling and data-driven design for nucleic acid delivery. Nature Communications 17, 2464 (2026). Read the database paper ↗

Source snapshot: author repository commit fc7c38933b44, retrieved 16 September 2026. Adapted for browsing by DC Chemicals. LNPDB attribution is retained; this page does not imply endorsement by the dataset authors.

Dataset license and attribution
MIT License

Copyright (c) 2025 Evan Collins

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Structure details

LNPDB structure & formulations