Sulfurous Acid

Sulfurous Acid

SCHEMBL42807

O=S(O)O.[KH]

nearest known ligand 0.00

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⚠ 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 29420 patents — a generic fragment claimed broadly, so it's down-weighted as IP noise. Top by claim status then date:

PatentTitleAssigneePublishedPriorityFilingCountryStatus
CN-116948095-B Polymer, ultra-high temperature oil well cement retarder, preparation method and application thereof, and cement slurry CHINA NATIONAL PETROLEUM CORP. (CN) 2026-05-26 CN claimed
CN-122079692-A Fertilizer for activating plant genes 2026-05-26 CN claimed
CN-121244242-B Vanadium-based catalyst for converting sulfur dioxide into sulfur trioxide by cracking waste acid, and preparation method and application thereof EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY (CN) 2026-05-26 CN claimed
CN-117285679-B Clay stabilizer and preparation method thereof CHINA PETROLEUM & CHEMICAL CORP. (CN) 2026-05-26 CN claimed
US-20260139175-A1 USE OF AN AQUEOUS DEICING/ANTI-ICING COMPOSITION FOR REDUCING CARBON FIBRE DEGRADATION PERSTORP AB (SE) 2026-05-21 US claimed
CN-122061012-A Method for preparing sponge palladium by synergistically enriching platinum palladium and green short process from silver anode slime nitric acid leaching solution 山东恒邦冶炼股份有限公司 2026-05-19 CN claimed
CN-122055356-A Process for preparing 4-chloro-5- (4-tolyl) -1H-imidazole-2-carbonitrile 克罗普诺赛斯(印度)私人有限公司 2026-05-15 CN claimed
WO-2026102393-A1 COMPOSITIONS AND METHODS FOR PRODUCING ALLULOSE DANISCO US INC. (US) 2026-05-15 WO claimed
CN-118145679-B Prussian blue and preparation method and application of active carbon-Prussian blue material 广西中伟新能源科技有限公司 2026-05-15 CN claimed
WO-2026090627-A1 STABLE PITOLISANT LIQUID FORMULATIONS AND METHOD OF ITS USE PATEL SANDIPKUMAR (US) 2026-04-30 WO claimed
US-3973074-A POTASSIUM HYDROXIDE OR CARBONATE MACMILLAN BLOEDEL LIMITED (CA) 1976-08-03 US claimed
US-3971440-A Method for treating subterranean formations with cellulose ether-polyacrylamide aqueous gels PHILLIPS PETROLEUM COMPANY (US) 1976-07-27 US claimed
US-3966903-A ALKYLENE CARBONATE SHISEIDO CO., LTD. (JA) 1976-06-29 US claimed
US-3966880-A Method for producing alkali metal gold sulfite AMERICAN CHEMICAL & REFINING COMPANY INC. (US) 1976-06-29 US claimed
US-3955998-A Aqueous gels for plugging fractures in subterranean formation and production of said aqueous gels PHILLIPS PETROLEUM COMPANY (US) 1976-05-11 US claimed
US-3951754-A Method of inhibiting the thermopolymerization of isoprene and butadiene LIAKUMOVICH ALEXANDR GRIGORIEV 1976-04-20 US claimed
US-3947491-A INHIBIT COLOR FORMATION THE PURDUE FREDERICK COMPANY (US) 1976-03-30 US claimed
US-3939662-A Liquid impervious surface structures PHILLIPS PETROLEUM COMPANY (US) 1976-02-24 US claimed
US-3932586-A ABSORPTION IN AQUEOUS SOLUTION TO FORM SULFATE WHICH IS CONVERTED TO H2S AND THEN TO S THE UNIVERSITY OF DELAWARE (US) 1976-01-13 US claimed
US-3931365-A AMMONIUM OR METAL THIOSULFATE, SULFITE OR BISULFITE STAUFFER CHEMICAL COMPANY (US) 1976-01-06 US claimed