Benzenesulfonic acids and derivatives

p-Toluenesulfonic acid monohydrate, 97.5%, pure, ACROS Organics™

CAS: 6192-52-5 Molecular Formula: C7H8O3S·H2O Molecular Weight (g/mol): 190.22 MDL Number: MFCD00142137 InChI Key: KJIFKLIQANRMOU-UHFFFAOYSA-N Synonym: p-toluenesulfonic acid monohydrate, 4-methylbenzenesulfonic acid hydrate, 4-methylbenzenesulfonic acid monohydrate, p-toluene sulfonic acid monohydrate, unii-3bto78gaff, benzenesulfonic acid, 4-methyl-, monohydrate, ptoluenesulfonic acid, p-toluenesulfonic acid, monohydrate, 3bto78gaff, 4-methylbenzene-1-sulfonic acid hydrate PubChem CID: 521998 IUPAC Name: 4-methylbenzenesulfonic acid;hydrate SMILES: CC1=CC=C(C=C1)S(=O)(=O)O.O

p-Toluenesulfonic acid monohydrate, 99%, extra pure, ACROS Organics™

CAS: 6192-52-5 Molecular Formula: C7H10O4S Molecular Weight (g/mol): 190.213 MDL Number: MFCD00142137 InChI Key: KJIFKLIQANRMOU-UHFFFAOYSA-N Synonym: p-toluenesulfonic acid monohydrate, 4-methylbenzenesulfonic acid hydrate, 4-methylbenzenesulfonic acid monohydrate, p-toluene sulfonic acid monohydrate, unii-3bto78gaff, benzenesulfonic acid, 4-methyl-, monohydrate, ptoluenesulfonic acid, p-toluenesulfonic acid, monohydrate, 3bto78gaff, 4-methylbenzene-1-sulfonic acid hydrate PubChem CID: 521998 IUPAC Name: 4-methylbenzenesulfonic acid;hydrate SMILES: CC1=CC=C(C=C1)S(=O)(=O)O.O

5-Sulfosalicylic acid dihydrate, 99+%, Acros Organics

CAS: 5965-83-3 Molecular Formula: C7H6O62H2O Molecular Weight (g/mol): 254.22 MDL Number: MFCD00149540 InChI Key: BHDKTFQBRFWJKR-UHFFFAOYSA-N Synonym: 2-hydroxy-5-sulfobenzoic acid dihydrate, 5-sulfosalicylic acid dihydrate, sulfosalicylic acid dihydrate, benzoic acid, 2-hydroxy-5-sulfo-, dihydrate, unii-09ngq462s6, 2-hydroxy-5-sulfobenzoic acid, hydrate, hydrate, 5-sulfosalicylsyre, 5-sulfosalicylsaeure, salicylic acid, 5-sulfo-, dihydrate, acmc-1aymd PubChem CID: 2723734 IUPAC Name: 2-hydroxy-5-sulfobenzoic acid;dihydrate SMILES: C1=CC(=C(C=C1S(=O)(=O)O)C(=O)O)O.O.O

Toluene-4-Sulfonic Acid, Extra Pure, SLR, Fisher Chemical

CAS: 6192-52-5 Molecular Formula: C7H10O4S Molecular Weight (g/mol): 190.213 MDL Number: 142137 InChI Key: KJIFKLIQANRMOU-UHFFFAOYSA-N Synonym: p-toluenesulfonic acid monohydrate, 4-methylbenzenesulfonic acid hydrate, 4-methylbenzenesulfonic acid monohydrate, p-toluene sulfonic acid monohydrate, unii-3bto78gaff, benzenesulfonic acid, 4-methyl-, monohydrate, ptoluenesulfonic acid, p-toluenesulfonic acid, monohydrate, 3bto78gaff, 4-methylbenzene-1-sulfonic acid hydrate PubChem CID: 521998 IUPAC Name: 4-methylbenzenesulfonic acid;hydrate SMILES: CC1=CC=C(C=C1)S(=O)(=O)O.O

5-Sulfosalicylic acid dihydrate, ACS, 99+%, Alfa Aesar™

CAS: 5965-83-3 Molecular Formula: C7H10O8S Molecular Weight (g/mol): 254.209 MDL Number: MFCD00007508 InChI Key: BHDKTFQBRFWJKR-UHFFFAOYSA-N Synonym: 2-hydroxy-5-sulfobenzoic acid dihydrate, 5-sulfosalicylic acid dihydrate, sulfosalicylic acid dihydrate, benzoic acid, 2-hydroxy-5-sulfo-, dihydrate, unii-09ngq462s6, 2-hydroxy-5-sulfobenzoic acid, hydrate, hydrate, 5-sulfosalicylsyre, 5-sulfosalicylsaeure, salicylic acid, 5-sulfo-, dihydrate, acmc-1aymd PubChem CID: 2723734 IUPAC Name: 2-hydroxy-5-sulfobenzoic acid;dihydrate SMILES: C1=CC(=C(C=C1S(=O)(=O)O)C(=O)O)O.O.O

5-Sulfosalicylic Acid Dihydrate, 98%, ACROS Organics™

CAS: 5965-83-3 Molecular Formula: C7H6O62H2O Molecular Weight (g/mol): 254.22 MDL Number: MFCD00149540 InChI Key: BHDKTFQBRFWJKR-UHFFFAOYSA-N Synonym: 2-hydroxy-5-sulfobenzoic acid dihydrate, 5-sulfosalicylic acid dihydrate, sulfosalicylic acid dihydrate, benzoic acid, 2-hydroxy-5-sulfo-, dihydrate, unii-09ngq462s6, 2-hydroxy-5-sulfobenzoic acid, hydrate, hydrate, 5-sulfosalicylsyre, 5-sulfosalicylsaeure, salicylic acid, 5-sulfo-, dihydrate, acmc-1aymd PubChem CID: 2723734 IUPAC Name: 2-hydroxy-5-sulfobenzoic acid;dihydrate SMILES: C1=CC(=C(C=C1S(=O)(=O)O)C(=O)O)O.O.O

p-Toluenesulfonic acid monohydrate, ACS reagent, Acros Organics

CAS: 6192-52-5 Molecular Formula: C7H10O4S Molecular Weight (g/mol): 190.213 InChI Key: KJIFKLIQANRMOU-UHFFFAOYSA-N Synonym: p-toluenesulfonic acid monohydrate, 4-methylbenzenesulfonic acid hydrate, 4-methylbenzenesulfonic acid monohydrate, p-toluene sulfonic acid monohydrate, unii-3bto78gaff, benzenesulfonic acid, 4-methyl-, monohydrate, ptoluenesulfonic acid, p-toluenesulfonic acid, monohydrate, 3bto78gaff, 4-methylbenzene-1-sulfonic acid hydrate PubChem CID: 521998 IUPAC Name: 4-methylbenzenesulfonic acid;hydrate SMILES: CC1=CC=C(C=C1)S(=O)(=O)O.O

p-Toluenesulfonic acid monohydrate, 97%, Alfa Aesar™

CAS: 6192-52-5 Molecular Formula: C7H10O4S Molecular Weight (g/mol): 190.213 MDL Number: MFCD00142137 InChI Key: KJIFKLIQANRMOU-UHFFFAOYSA-N Synonym: p-toluenesulfonic acid monohydrate, 4-methylbenzenesulfonic acid hydrate, 4-methylbenzenesulfonic acid monohydrate, p-toluene sulfonic acid monohydrate, unii-3bto78gaff, benzenesulfonic acid, 4-methyl-, monohydrate, ptoluenesulfonic acid, p-toluenesulfonic acid, monohydrate, 3bto78gaff, 4-methylbenzene-1-sulfonic acid hydrate PubChem CID: 521998 IUPAC Name: 4-methylbenzenesulfonic acid;hydrate SMILES: CC1=CC=C(C=C1)S(=O)(=O)O.O

p-Toluenesulfonic acid, sodium salt, ACROS Organics™

CAS: 657-84-1 Molecular Formula: C7H7NaO3S Molecular Weight (g/mol): 194.19 MDL Number: MFCD00064388 InChI Key: KVCGISUBCHHTDD-UHFFFAOYSA-M Synonym: sodium p-toluenesulfonate, sodium 4-methylbenzenesulfonate, sodium tosylate, p-toluenesulfonic acid sodium salt, sodium toluenesulfonate, sodium toluenesulphonate, tosylate, sodium, naxonate hydrotrope, cyclophil sts 70, eltesol st 34 PubChem CID: 3720192 IUPAC Name: sodium;4-methylbenzenesulfonate SMILES: CC1=CC=C(C=C1)S(=O)(=O)[O-].[Na+]

p-Toluenesulfonic anhydride, 95%, ACROS Organics™

CAS: 4124-41-8 Molecular Formula: C14H14O5S2 Molecular Weight (g/mol): 326.39 MDL Number: MFCD00008548 InChI Key: PDVFSPNIEOYOQL-UHFFFAOYSA-N Synonym: p-toluenesulfonic anhydride, 4-methylbenzenesulfonic anhydride, 4-toluenesulfonic anhydride, p-toluenesulfonicanhydride, p-toluene sulfonic anhydride, toluene-p-sulphonic anhydride, 4-methylphenyl sulfonyl 4-methylbenzenesulfonate, p-toluenesulphonic anhydride, toluene-4-sulfonic anhydride, benzenesulfonic acid, 4-methyl-, anhydride PubChem CID: 77773 IUPAC Name: (4-methylphenyl)sulfonyl 4-methylbenzenesulfonate SMILES: CC1=CC=C(C=C1)S(=O)(=O)OS(=O)(=O)C2=CC=C(C=C2)C

Alfa Aesar™ 3-Sulfobenzoic acid disodium salt monohydrate, 97%

CAS: 14995-40-5 Molecular Formula: C7H6Na2O6S Molecular Weight (g/mol): 264.159 MDL Number: MFCD00149379 InChI Key: VODZKGQSNPCTAD-UHFFFAOYSA-L Synonym: sodium 3-sulfonatobenzoate hydrate, 3-sulfobenzoic acid disodium salt monohydrate, disodium 3-sulfonatobenzoate hydrate PubChem CID: 2734925 IUPAC Name: disodium;3-sulfonatobenzoate;hydrate SMILES: C1=CC(=CC(=C1)S(=O)(=O)[O-])C(=O)[O-].O.[Na+].[Na+]

[Hydroxy(tosyloxy)iodo]benzene, 97+%, Acros Organics™

CAS: 27126-76-7 Molecular Formula: C13H13IO4S Molecular Weight (g/mol): 392.21 MDL Number: MFCD00011547 InChI Key: LRIUKPUCKCECPT-UHFFFAOYSA-N Synonym: hydroxy tosyloxy iodo benzene, htib, koser's reagent, phenyliodosohydroxy tosylate, koser reagent, unii-2eoa97b14a, hydroxy p-tolylsulfonyl oxy iodo benzene, hydroxy 4-methylbenzenesulfonato-o phenyliodine, iodosobenzene-i-mono-p-toluenesulfonate, hydroxy phenyl 4-methylbenzenesulfonoperoxoyl iodide PubChem CID: 325434 IUPAC Name: [hydroxy(phenyl)-$l^{3}-iodanyl] 4-methylbenzenesulfonate SMILES: CC1=CC=C(C=C1)S(=O)(=O)OI(C2=CC=CC=C2)O

Alfa Aesar™ 2-Sulfobenzoic acid hydrate, 98%

CAS: 123333-68-6 Molecular Formula: C7H8O6S Molecular Weight (g/mol): 220.195 MDL Number: MFCD00149534 InChI Key: HVJWSZOEEIYKSS-UHFFFAOYSA-N Synonym: 2-sulfobenzoic acid hydrate, benzoic acid, 2-sulfo-hydrate, acmc-20anmu, 2-sulphobenzoic acid hydrate, c7h6o5s.h2o, 2-sulfobenzoic acid, oxamethane, benzoic acid, 2-sulfo-, monohydrate PubChem CID: 24820382 IUPAC Name: 2-sulfobenzoic acid;hydrate SMILES: C1=CC=C(C(=C1)C(=O)O)S(=O)(=O)O.O

5-Sulfosalicylic acid dihydrate, 98%, Alfa Aesar™

CAS: 5965-83-3 Molecular Formula: C7H10O8S Molecular Weight (g/mol): 254.209 MDL Number: MFCD00007508 InChI Key: BHDKTFQBRFWJKR-UHFFFAOYSA-N Synonym: 2-hydroxy-5-sulfobenzoic acid dihydrate, 5-sulfosalicylic acid dihydrate, sulfosalicylic acid dihydrate, benzoic acid, 2-hydroxy-5-sulfo-, dihydrate, unii-09ngq462s6, 2-hydroxy-5-sulfobenzoic acid, hydrate, hydrate, 5-sulfosalicylsyre, 5-sulfosalicylsaeure, salicylic acid, 5-sulfo-, dihydrate, acmc-1aymd PubChem CID: 2723734 IUPAC Name: 2-hydroxy-5-sulfobenzoic acid;dihydrate SMILES: C1=CC(=C(C=C1S(=O)(=O)O)C(=O)O)O.O.O

Alfa Aesar™ 2,4-Dinitrobenzenesulfonic acid hydrate, 98%

CAS: 698999-22-3 Molecular Formula: C6H6N2O8S Molecular Weight (g/mol): 266.18 MDL Number: MFCD00150961 InChI Key: GWGBNENHEGYJSN-UHFFFAOYSA-N Synonym: 2,4-dinitrobenzenesulfonic acid hydrate, dinitrobenzenesulfonic acid hydrate, c6h4n2o7s.h2o PubChem CID: 16217154 IUPAC Name: 2,4-dinitrobenzenesulfonic acid;hydrate SMILES: C1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])S(=O)(=O)O.O

N-[[(4-Methylphenyl)sulfonyl]oxy]ethane -1,2-diamine, ≥95%, Maybridge

CAS: 175205-36-4 Molecular Formula: C9H14N2O3S Molecular Weight (g/mol): 230.282 MDL Number: MFCD00276588 InChI Key: RWUMUZOGZPNCIL-UHFFFAOYSA-N Synonym: 2-tosyloxy amino ethanamine, 2-aminoethyl amino 4-methylbenzenesulfonate, benzenesulfonic acid,4-methyl-, 2-aminoethyl azanyl ester, n1-4-methylphenyl sulfonyl oxy ethane-1,2-diamine, 2-aminoethylamino 4-methylbenzenesulfonate, 2-4-methylphenyl sulfonyl-oxy amino ethanamine, n~1~-4-methylbenzene-1-sulfonyl oxy ethane-1,2-diamine, n~1~-4-methylphenyl sulfonyl oxy ethane-1,2-diamine PubChem CID: 2796248 IUPAC Name: (2-aminoethylamino) 4-methylbenzenesulfonate SMILES: CC1=CC=C(C=C1)S(=O)(=O)ONCCN

Alfa Aesar™ Ethyl O-(2-mesitylenesulfonyl)acetohydroxamate, 98+%

CAS: 38202-27-6 Molecular Formula: C13H19NO4S Molecular Weight (g/mol): 285.358 MDL Number: MFCD00009244 InChI Key: KQCBSWBQAXTILK-WYMLVPIESA-N Synonym: ethyl o-mesitylsulfonylacetohydroxamate, ethyl n-mesitylsulfonyl oxyacetimidate, ethyl o-methylsulphonylacetohydroxamate, ethyl o-2-mesitylenesulfonyl acethydroxamate, o-mesitylsulfonylacetohydroxamic acid ethyl ester, ethyl 1z-n-mesitylsulfonyl oxy ethanimidoate, ethyl 1e-n-2,4,6-trimethylphenyl sulfonyloxyethanimidate, kqcbswbqaxtilk-owbhpgmisa-n, z-ethyl n-mesitylsulfonyloxyacetimidate, z-ethyl n-mesitylsulfonyl oxyacetimidate PubChem CID: 6282444 IUPAC Name: ethyl (1E)-N-(2,4,6-trimethylphenyl)sulfonyloxyethanimidate SMILES: CCOC(=NOS(=O)(=O)C1=C(C=C(C=C1C)C)C)C

Alfa Aesar™ 3-Sulfobenzoic acid monosodium salt, 97%

CAS: 17625-03-5 Molecular Formula: C7H5NaO5S Molecular Weight (g/mol): 224.162 MDL Number: MFCD00066378 InChI Key: KQHKITXZJDOIOD-UHFFFAOYSA-M Synonym: sodium 3-sulfobenzoate, 3-sulfobenzoic acid monosodium salt, benzoic acid, 3-sulfo-, monosodium salt, benzoic acid, 3-sulfo-, sodium salt 1:1, sodium hydrogen m-sulphonatobenzoate, sodium3-sulfobenzoate, sodium m-sulfobenzoate, acmc-209sh5, 3-sodiosulfo benzoic acid, ksc491e3l PubChem CID: 23668512 IUPAC Name: sodium;3-sulfobenzoate SMILES: C1=CC(=CC(=C1)S(=O)(=O)O)C(=O)[O-].[Na+]

Alfa Aesar™ p-Toluenesulfonic anhydride, 97%

CAS: 4124-41-8 Molecular Formula: C14H14O5S2 Molecular Weight (g/mol): 326.381 MDL Number: MFCD00008548 InChI Key: PDVFSPNIEOYOQL-UHFFFAOYSA-N Synonym: p-toluenesulfonic anhydride, 4-methylbenzenesulfonic anhydride, 4-toluenesulfonic anhydride, p-toluenesulfonicanhydride, p-toluene sulfonic anhydride, toluene-p-sulphonic anhydride, 4-methylphenyl sulfonyl 4-methylbenzenesulfonate, p-toluenesulphonic anhydride, toluene-4-sulfonic anhydride, benzenesulfonic acid, 4-methyl-, anhydride PubChem CID: 77773 IUPAC Name: (4-methylphenyl)sulfonyl 4-methylbenzenesulfonate SMILES: CC1=CC=C(C=C1)S(=O)(=O)OS(=O)(=O)C2=CC=C(C=C2)C

Alfa Aesar™ 2,4-Dinitrobenzenesulfonic acid sodium salt, 97%

CAS: 885-62-1 Molecular Formula: C6H5N2NaO8S Molecular Weight (g/mol): 288.162 MDL Number: MFCD00007471 InChI Key: YXMASPNETDOKIC-UHFFFAOYSA-M Synonym: sodium 2,4-dinitrobenzenesulfonate hydrate, acmc-209quh, sodium dnbs hydrate, 2,4-dinitrobenzenesulfonic acid sodium salt hydrate PubChem CID: 70700115 IUPAC Name: sodium;2,4-dinitrobenzenesulfonate;hydrate SMILES: C1=CC(=C(C=C1[N+](=O)[O-])[N+](=O)[O-])S(=O)(=O)[O-].O.[Na+]

Alfa Aesar™ Hydroxy(tosyloxy)iodobenzene, 97%

CAS: 27126-76-7 Molecular Formula: C13H13IO4S Molecular Weight (g/mol): 392.207 MDL Number: MFCD00011547 InChI Key: LRIUKPUCKCECPT-UHFFFAOYSA-N Synonym: hydroxy tosyloxy iodo benzene, htib, koser's reagent, phenyliodosohydroxy tosylate, koser reagent, unii-2eoa97b14a, hydroxy p-tolylsulfonyl oxy iodo benzene, hydroxy 4-methylbenzenesulfonato-o phenyliodine, iodosobenzene-i-mono-p-toluenesulfonate, hydroxy phenyl 4-methylbenzenesulfonoperoxoyl iodide PubChem CID: 325434 IUPAC Name: [hydroxy(phenyl)-$l^{3}-iodanyl] 4-methylbenzenesulfonate SMILES: CC1=CC=C(C=C1)S(=O)(=O)OI(C2=CC=CC=C2)O

(R)-(+)-3-Aminotetrahydrofuran p-toluenesulfonate salt, 95%, Acros Organics

CAS: 111769-27-8 Molecular Formula: C7H8O3S·C4H9NO Molecular Weight (g/mol): 259.32 InChI Key: BZXPLADBSZWDIH-FZSMXKCYSA-N Synonym: r-3-aminotetrahydrofuran tosylate, r-+-tetrahydro-3-furylamine p-toluenesulfonate salt, r---3-aminotetrahydrofuran toluene-4-sulfonate, r-+-3-aminotetrahydrofuran toluene-4-sulfonate, r---3-aminotetrahydrofurantoluene-4-sulfonate, 3-furanamine, tetrahydro-, r-, 4-methylbenzenesulfonate, c4h9no.c7h8o3s, r-tetrahydrofuran-3-amine-4-methylbenzenesulfonate, 3r-oxolan-3-amine; para-toluene sulfonate, 4-methylbenzenesulfonic acid; 3r-tetrahydrofuran-3-amine PubChem CID: 14243169 IUPAC Name: 4-methylbenzenesulfonic acid;(3R)-oxolan-3-amine SMILES: CC1=CC=C(C=C1)S(=O)(=O)O.C1COCC1N

Alfa Aesar™ Mesitylenesulfonic acid dihydrate, 98+%

CAS: 835617-36-2 Molecular Formula: C9H16O5S Molecular Weight (g/mol): 236.282 MDL Number: MFCD00149535 InChI Key: LIKWMDGAWXCECN-UHFFFAOYSA-N Synonym: mesitylenesulfonic acid dihydrate, 2-mesitylenesulfonic acid dihydrate, 2,4,6-trimethylbenzenesulfonic acid dihydrate, benzenesulfonic acid, 2,4,6-trimethyl-, dihydrate, mesitylenesulfonicaciddihydrate, mesitylenesulfonic acid dihydrate, 98+%, benzenesulfonic acid,2,4,6-trimethyl-, hydrate 1:2, 2,4,6-trimethylbenzenesulfonic acid, oxamethane, oxamethane PubChem CID: 15620344 IUPAC Name: 2,4,6-trimethylbenzenesulfonic acid;dihydrate SMILES: CC1=CC(=C(C(=C1)C)S(=O)(=O)O)C.O.O

5-Sulfosalicylic acid dihydrate, ACS reagent, Acros Organics

CAS: 5965-83-3 Molecular Formula: C7H6O62H2O Molecular Weight (g/mol): 254.22 MDL Number: MFCD00149540 InChI Key: BHDKTFQBRFWJKR-UHFFFAOYSA-N Synonym: 2-hydroxy-5-sulfobenzoic acid dihydrate, 5-sulfosalicylic acid dihydrate, sulfosalicylic acid dihydrate, benzoic acid, 2-hydroxy-5-sulfo-, dihydrate, unii-09ngq462s6, 2-hydroxy-5-sulfobenzoic acid, hydrate, hydrate, 5-sulfosalicylsyre, 5-sulfosalicylsaeure, salicylic acid, 5-sulfo-, dihydrate, acmc-1aymd PubChem CID: 2723734 IUPAC Name: 2-hydroxy-5-sulfobenzoic acid;dihydrate SMILES: C1=CC(=C(C=C1S(=O)(=O)O)C(=O)O)O.O.O

Alfa Aesar™ (R)-2-Methylpyrrolidine p-toluenesulfonate, 97%

CAS: 204387-55-3 Molecular Formula: C12H19NO3S Molecular Weight (g/mol): 257.348 MDL Number: MFCD07368911 InChI Key: ZXYDRZKLQBDQTN-QDXATWJZSA-N Synonym: r-2-methylpyrrolidine tosylate, r-2-methylpyrrolidine 4-methylbenzenesulfonate, r-2-methyl-pyrrolidine tosylate, 2r-2-methylpyrrolidine; para-toluene sulfonate, 2r-2-methylpyrrolidine tosylate, r-2-methylpyrrolidine p-toluenesulfonate, 2r-2-methylpyrrolidine toluene-4-sulphonate, 2r-2-methylpyrrolidine para-toluene sulfonate, r-2-methylpyrrolidine 4-methylphenylsulphonate, r-+-2-methylpyrrolidine p-toluenesulfonic acid salt PubChem CID: 20706077 IUPAC Name: 4-methylbenzenesulfonic acid;(2R)-2-methylpyrrolidine SMILES: CC1CCCN1.CC1=CC=C(C=C1)S(=O)(=O)O

Alfa Aesar™ p-Toluenesulfonic acid monohydrate, 98%

CAS: 6192-52-5 Molecular Formula: C7H10O4S Molecular Weight (g/mol): 190.213 MDL Number: MFCD00142137 InChI Key: KJIFKLIQANRMOU-UHFFFAOYSA-N Synonym: p-toluenesulfonic acid monohydrate, 4-methylbenzenesulfonic acid hydrate, 4-methylbenzenesulfonic acid monohydrate, p-toluene sulfonic acid monohydrate, unii-3bto78gaff, benzenesulfonic acid, 4-methyl-, monohydrate, ptoluenesulfonic acid, p-toluenesulfonic acid, monohydrate, 3bto78gaff, 4-methylbenzene-1-sulfonic acid hydrate PubChem CID: 521998 IUPAC Name: 4-methylbenzenesulfonic acid;hydrate SMILES: CC1=CC=C(C=C1)S(=O)(=O)O.O

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