Sulfurous Acid

Sulfurous Acid

SCHEMBL42081

O=S([O-])[O-].[H+].[H+]

nearest known ligand 0.00

Full drug profile on Sugi Atlas →

⚠ Novel chemotype — no close known analogue (best Tanimoto < 0.3). Unexplored chemical space relative to ChEMBL.

Similar compounds — the chemically nearest patent molecules

Nearest neighbours by Morgan-fingerprint cosine across the patent-compound collection, with each neighbour's top predicted target and the predicted targets it shares with this molecule.

Similarity is cosine over the 2,048-bit Morgan fingerprint (≈ Tanimoto). Identical fingerprints score 1.00.

Patent provenance — the patents this molecule appears in, and who filed them

Appears in 7237 patents — a generic fragment claimed broadly, so it's down-weighted as IP noise. Top by claim status then date:

PatentTitleAssigneePublishedPriorityFilingCountryStatus
WO-2026107004-A1 SIMULTANEOUS CONTROL OF SCALE, CORROSION, AND HYDROGEN SULFIDE-RELATED ISSUES USING A SINGLE PRODUCT CHAMPIONX LLC (US) 2026-05-21 WO claimed
CN-122057010-A Application of Areg in preparation of medicines for improving lacrimal gland function and treating xerophthalmia 天津医科大学 2026-05-19 CN claimed
CN-117362354-B Cyclometalated palladium complex, and preparation method and application thereof 昆明理工大学 2026-05-15 CN claimed
US-20260132062-A1 SIMULTANEOUS CONTROL OF SCALE, CORROSION, AND HYDROGEN SULFIDE-RELATED ISSUES USING A SINGLE PRODUCT CHAMPIONX LLC (US) 2026-05-14 US claimed
CN-122010835-A HSO is detected to target lysosomal assay3-AIE fluorescent probe of (2) 盐城师范学院 2026-05-12 CN claimed
US-12606873-B2 Detecting neoplasm MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH (US) 2026-04-21 US claimed
EP-4357377-B1 METHOD FOR PRODUCING FLUORINE-CONTAINING COPOLYMER AGC INC (JP) 2026-04-08 EP claimed
EP-4714579-A1 FILTER FOR ELECTRICAL DISCHARGE MACHINE AND ELECTRICAL DISCHARGE MACHINE FANUC CORPORATION (JP) 2026-03-25 EP claimed
US-12515191-B2 Particulate water-absorbent resin composition SUMITOMO SEIKA CHEMICALS CO., LTD. (JP) 2026-01-06 US claimed
US-20250389083-A1 DIGESTION ACCELERATOR AND METHOD FOR PRODUCING PULP USING SAME NICCA CHEMICAL CO (JP) 2025-12-25 US claimed
US-4269989-A HEATING O-PHENYLENEDIAMINE AND EXCESS UREA IN WATER HAVING A PH OF 4 TO 9; STOICHIOMETRY; EFFICIENCY; PURITY HOECHST AKTIENGESELLSCHAFT (DE) 1981-05-26 US claimed
US-4122251-A Process for production of 5-fluorouracil and its derivatives DAIKIN KOGYO CO., LTD. (JP) 1978-10-24 US claimed
US-4105620-A TREATING WITH COMPOUND FROM GROUP OF OXALIC ACID, ALKALI OXALATE, ALKALI SULFATE, ALKALI HYDROGEN SULFITE, ALKALI DITHIONITE AND ALKALI HYDROGEN SULFATE AKZONA INCORPORATED (US) 1978-08-08 US claimed
US-4087610-A Process for the preparation of 5-acetoacetylamino-benzimidazolone HOECHST AKTIENGESELLSCHAFT (DT) 1978-05-02 US claimed
US-4041081-A ISOLATING ISOMERS BY PRECIPITATING N-ALDEHYDE HYDROGEN SULFITE N RUHRCHEMIE AKTIENGESELLSCHAFT (DT) 1977-08-09 US claimed
US-4009088-A Process for producing aqueous solutions of sodium, ammonium and magnesium sulphite RAUMA-REPOLA OY (SF) 1977-02-22 US claimed
US-3966903-A ALKYLENE CARBONATE SHISEIDO CO., LTD. (JA) 1976-06-29 US claimed
US-3965250-A Separation of sulfur isotopes THE UNITED STATES OF AMERICA AS REPRESENTED BY THE UNITED STATES ENERGY RESEARCH AND DEVELOPMENT ADMINISTRATION (US) 1976-06-22 US claimed
US-3958044-A VINYL POLYMER LION YUSHI KABUSHIKI KAISHA (JA) 1976-05-18 US claimed
US-3947512-A FROM AROMATIC DIAZONIUM COMPOUNDS HOECHST AKTIENGESELLSCHAFT (DT) 1976-03-30 US claimed