Aspartame
A dipeptide obtained by formal condensation of the α-carboxy group of L-aspartic acid with the amino group of methyl L-phenylalaninate. Commonly used as an artificial sweetener. — ChEBI
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Identity & molecular properties
Source-linked values| CAS number | 22839-47-0 | ChEBI ↗ |
| Molecular formula | C14H18N2O5 | ChEBI ↗ |
| Molar mass | 294.307 g/mol | ChEBI ↗ |
| Monoisotopic mass | 294.12157 Da | ChEBI ↗ |
| Formal charge | 0 | ChEBI ↗ |
| ChEBI identifier | CHEBI:2877 | ChEBI ↗ |
Cross-source molecular data
PubChem| Molar mass | 294.30 g/mol | PubChem ↗ |
| Exact mass | 294.12157168 Da | PubChem ↗ |
| Computed XLogP | -2.7 | PubChem ↗ |
| Topological polar surface area (Ų) | 119 | PubChem ↗ |
| H-bond donors | 3 | PubChem ↗ |
| H-bond acceptors | 6 | PubChem ↗ |
| Rotatable bonds | 8 | PubChem ↗ |
PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.
Names & structural identifiers
Copy any identifieraspartamemethyl L-alpha-aspartyl-L-phenylalaninateIAOZJIPTCAWIRG-QWRGUYRKSA-NCOC(=O)[C@H](Cc1ccccc1)NC(=O)[C@@H](N)CC(=O)OInChI=1S/C14H18N2O5/c1-21-14(20)11(7-9-5-3-2-4-6-9)16-13(19)10(15)8-12(17)18/h2-6,10-11H,7-8,15H2,1H3,(H,16,19)(H,17,18)/t10-,11-/m0/s1Names & synonyms
Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.
Classification & relationships
ChEBI ontologyRoles recorded in ChEBI
Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.
Mass ↔ amount of substance
Calculated from sourced massUses 294.307 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.
Elemental composition
Theoretical mass fractionsCONHCalculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.
Research & patent references
Selected source associationsSources & record history
Checked 27 Sep 2026Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0
PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.