SDF to SMILES converter

Convert SDF to SMILES locally in your browser with COSMolKit, Rust, and WebAssembly.

COSMolKit 0.3.0 / Rust / WASM

Input formatV2000 or V3000 record

Output format.smi

Source

315 characters

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Converted output

3 atoms / 2 bonds

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Converted locally. No structure data is uploaded.

SUPPORTED FORMATS

Formats available in this converter

COSMolKit reads and writes the molecular graph locally. Coordinate-dependent exports use the coordinates available in the source or generated by the selected workflow.

Input formats

SMILES; MOL or SDF V2000/V3000; Tripos MOL2; PDB; PDBx/mmCIF; XYZ.

Output formats

SMILES; MOL V2000/V3000; SDF V2000/V3000; PDB; SVG depiction.

Common molecular file conversions

Convert files to SMILES: SDF to SMILES, MOL to SMILES, MOL2 to SMILES, PDB to SMILES, mmCIF to SMILES, and XYZ to SMILES.

Export from SMILES: SMILES to SDF V2000/V3000, SMILES to MOL V2000/V3000, SMILES to PDB, and SMILES to SVG.

Convert molecular structure files: MOL2 to SDF, MOL2 to PDB, SDF to MOL, SDF to PDB, PDB to SDF, mmCIF to PDB, and XYZ to SDF.

Create a 2D structure image: Render SMILES, MOL, SDF, MOL2, PDB, mmCIF, or XYZ input as a scalable SVG molecular depiction.

PYTHON BACKEND

Run the same conversion with COSMolKit

The example tracks the formats and source currently selected above.

COSMolKit Python 0.3.0

INSTALLpip install cosmolkit==0.3.0

Python 3.9+ / Rust-native wheel

convert_molecule.py

from pathlib import Path
from cosmolkit import Molecule

source = "\n  COSMolKit          2D\n\n  3  2  0  0  0  0  0  0  0  0999 V2000\n   -1.2990   -0.2500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    0.0000    0.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2990   -0.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  1  2  1  0\n  2  3  1  0\nM  END\n\n$$$$\n"
mol = Molecule.read_mol_from_str(source)
output = mol.to_smiles()

Path("molecule.smi").write_text(output, encoding="utf-8")