Sulfurous Acid

Sulfurous Acid

SCHEMBL250500

O=S([O-])O.O=S([O-])O.[Ca+2]

nearest known ligand 0.00

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Known targets — ChEMBL curated mechanism

GABBR1GABBR2GABRA1GABRA2GABRA3GABRA4GABRA5GABRA6GABRB1GABRB2GABRB3GABRDGABREGABRG1GABRG2GABRG3GABRPGABRQGRIN1GRIN2AGRIN2BGRIN2CGRIN2DGRIN3AGRIN3BHMGCRMMP1MMP13MMP7MMP8PTGS1PTGS2ileSpolrplArplBrplCrplDrplErplFrplJrplKrplLrplMrplNrplOrplPrplQrplRrplSrplTrplUrplVrplWrplXrplYrpmArpmBrpmCrpmDrpmErpmFrpmGrpmHrpmIrpmJrpsArpsBrpsCrpsDrpsErpsFrpsGrpsHrpsIrpsJrpsKrpsLrpsMrpsNrpsOrpsPrpsQrpsRrpsSrpsTrpsUykgMykgO

The experimentally established mechanism targets of Sulfurous Acid. The predicted profile below is derived independently by chemical similarity — agreement is a validation signal, a miss is honest.

⚠ 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.

Compoundsimilaritytop predictedshared targets
Sulfurous Acid SCHEMBL27975934 0.95 CA1 (0.46)
Sulfurous Acid SCHEMBL28101435 0.95 CA1 (0.60)
Sulfurous Acid SCHEMBL11239933 0.95 CA1 (0.46)
Sulfurous Acid SCHEMBL9005115 0.95 CA1 (0.46)
Sulfurous Acid SCHEMBL16034921 0.91 CA1 (0.42)
Sulfurous Acid SCHEMBL28242812 0.91 CA1 (0.42)
Sulfurous Acid SCHEMBL31074237 0.91 CA1 (0.42)
Sulfurous Acid SCHEMBL10380372 0.89 CA1 (0.50)
Sulfurous Acid SCHEMBL889 0.89
Sulfurous Acid SCHEMBL21752880 0.89

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 2953 patents — a generic fragment claimed broadly, so it's down-weighted as IP noise. Top by claim status then date:

PatentTitleAssigneePublishedPriorityFilingCountryStatus
EP-4743405-A1 PROCESSES FOR PRODUCING CALCIUM OXIDE AND SULFURIC ACID FROM CALCIUM SULFATE WITH MAGNESIUM INTERMEDIATE Innovator Energy Llc (US) 2026-05-20 EP claimed
CN-122010156-A Method for preparing high-purity calcium fluoride and calcium sulfate by recycling fluorine-containing mixed acid 南京格洛特环境工程股份有限公司 2026-05-12 CN claimed
EP-4249457-B1 METHOD FOR CO-PRODUCING 1,1-DIFLUOROETHANE AND VINYL CHLORIDE ZHEJIANG QUHUA FLUOR CHEMISTRY CO LTD (CN) 2026-04-22 EP claimed
EP-4709888-A1 ORE FILTRATION Coatex (FR) 2026-03-18 EP claimed
US-12568977-B2 Leavening agents Kudos Blend Ltd. (GB) 2026-03-10 US claimed
EP-4324331-B1 METHOD TO PRODUCE A CLEAR PROTEIN INGREDIENT FROM SUNFLOWERSEEDS CEREAL DOCKS S P A (IT) 2026-03-04 EP claimed
EP-4701433-A1 METHOD FOR PROCESSING WET POMACE Herbstreith & Fox GmbH & Co. KG Pektin-Fabriken (DE) 2026-03-04 EP claimed
US-20260028490-A1 STABILISED MINERAL SUSPENSION COATEX (FR) 2026-01-29 US claimed
US-12491146-B1 Skin brightening compositions with thiopyridinone compound L'OREAL (FR) 2025-12-09 US claimed
US-20250361402-A1 STABILISED CONCENTRATED MINERAL SUSPENSION COATEX (FR) 2025-11-27 US claimed
US-4238459-A Chemical beneficiation of phosphatic limestone and phosphate rock with α-hydroxysulfonic acids TENNESSEE VALLEY AUTHORITY (US) 1980-12-09 US claimed
US-4227881-A HEATED AQUEOUS SOLUTION OF SODIUM HYDROXYMETHANE SULFINATE, AMMONIUM SALT AND A SULFITE SALT ROYCE CHEMICAL COMPANY (US) 1980-10-14 US claimed
US-4183908-A PRECIPITATION IN PRESENCE OF INORGANIC POLYPHOSPHATES SOUTHERN CALIFORNIA EDISON COMPANY (US) 1980-01-15 US claimed
US-4135967-A PROCESS FOR PRODUCING CELLULOSE PULP BY SOLID PHASE DIGESTION SOCIETE GENERALE DE BREVETS INDUSTRIELS ET OHIMIQUES (CH) 1979-01-23 US claimed
US-4110154-A SODIUM BISULFITE BY CATION EXCHANGING CALCIUM BISULFITE RAUMA-REPOLA OY (FI) 1978-08-29 US claimed
US-4080428-A Process for the purification of flue and other waste gas Holter, Heinz (DT) 1978-03-21 US claimed
US-4066735-A PROCESS FOR DEMINERALIZATION OF CRUSTACEA SHELLS RAINIER NATIONAL BANK EXECUTOR OF THE ESTATE OF QUINTIN P. PENISTON, DEC'D. 1978-01-03 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-3998688-A Method for the production of cellulose fibers using a two-step pre-treatment VEB FILMFABRIK WOLFEN-FOTOCHEMISCHES KOMBINAT (DL) 1976-12-21 US claimed
US-3961029-A Process for recovering chromic acid solution from a waste liquor containing chromic ions TOKICO LTD. (JA) 1976-06-01 US claimed