Nisotopes Standalone SMILES & Peptide Converter

Standalone mass spectrometry molecular weight, peptide translation, and 2D/3D structure rendering tool.

Amino Acid Sequence to SMILES & Mass

Enter a 1-letter peptide sequence (e.g., ACDEF, GFF) and click Generate Structure to compute its properties.

Presets:

SMILES String & 2D/3D Structure Preview

Small Molecule Presets:
Structure Viewport
Monoisotopic Mass (Da)
180.0423
Average Mass (Da)
180.157
[M+H]+ Adduct (m/z)
181.0495
Molecular Formula
C9H8O4