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Hypothesis-and-Refinement Learning of Organic Structures from Multimodal Spectroscopic Data

Research Bioinformatics AI

Merged summary

TL;DR - SpectroMol combines multimodal NMR evidence with a mass-constrained molecular generator to automate organic structure elucidation. It achieves 93.8% top-1 accuracy on simulated data and transfers to experimental spectra with limited fine-tuning.

  • QM9SPIN provides DFT-derived 1D and 2D spectra, including J-coupling, DEPT, and explicit spin interactions.
  • SpectroMol proposes chemically valid structures from multimodal spectral inputs.
  • MS-Mol2Mol applies molecular formula, exact mass, and unsaturation constraints using a prior trained on 400 million molecules.
  • Mass-guided refinement further improves predictions on experimental spectra.

Sources (1)

Hypothesis-and-Refinement Learning of Organic Structures from Multimodal Spectroscopic Data

arXiv physics.chem-ph Chengchun Liu, Zhiyuan Yan, Li Yuan, Hao Li, Boxuan Zhao, Yonghong Tian, Bartosz A. Grzybowski, Fanyang Mo 2026-07-22 arXiv:2607.19816

TL;DR - SpectroMol combines multimodal NMR evidence with a mass-constrained molecular generator to automate organic structure elucidation. It achieves 93.8% top-1 accuracy on simulated data and transfers to experimental spectra with limited fine-tuning.

  • QM9SPIN provides DFT-derived 1D and 2D spectra, including J-coupling, DEPT, and explicit spin interactions.
  • SpectroMol proposes chemically valid structures from multimodal spectral inputs.
  • MS-Mol2Mol applies molecular formula, exact mass, and unsaturation constraints using a prior trained on 400 million molecules.
  • Mass-guided refinement further improves predictions on experimental spectra.
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