Hydrogen + Oxygen + Sulfur Compounds

Formula	IUPAC Name	Common Name	Mol. Weight
C15H21N3O4S2	2-methyl-6-[5-methyl-2,4-bis(methylsulfanyl)pyrrolo[2,3-d]pyrimidin-7-yl]tetrahydropyran-3,4,5-triol	NSC613056	371.50
C15H17N3O2S	N-(1-carbamoyl-3-methylsulfanyl-propyl)quinoline-3-carboxamide	NSC613216	303.40
C10H17N7OS2	3-[[3-[2-[amino(sulfanyl)methylene]hydrazino]-5,5-dimethyl-2-nitroso-cyclohex-2-en-1-ylidene]amino]isothiourea	3-[[3-[2-[amino(sulfanyl)methylene]hydrazino]-5,5-dimethyl-2-nitroso-cyclohex-2-en-1-ylidene]amino]isothiourea	315.40
C15H15N3OS	3-(N-benzyloxy-C-phenyl-carbonimidoyl)isothiourea	3-(N-benzyloxy-C-phenyl-carbonimidoyl)isothiourea	285.40
C20H12Cl2N7NaO11S2	4-chloro-5-[3-(2-chloro-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride	4-chloro-5-[3-(2-chloro-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride	684.40
C20H12Cl2N7O11S2+	4-chloro-5-[3-(2-chloro-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonic acid	NCI60_004894	661.40
C21H17N6NaO12S2	4-methoxy-5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-phenyl-tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride	4-methoxy-5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-phenyl-tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride	632.50
C21H17N6O12S2+	4-methoxy-5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-phenyl-tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonic acid	NSC613258	609.50
C21H16N7NaO12S2	5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride	5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride	645.50
C21H16N7O12S2+	4-methoxy-2-nitro-5-[3-(4-nitro-3-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-2-ium-2-yl]benzenesulfonic acid	NSC613259	622.50
C16H14N4O4S	4-oxo-N'-(p-tolylsulfonyl)-1H-quinazoline-2-carbohydrazide	4-oxo-N'-(p-tolylsulfonyl)-1H-quinazoline-2-carbohydrazide	358.40
C17H16N4O4S	7-methyl-4-oxo-N'-(p-tolylsulfonyl)-1H-quinazoline-2-carbohydrazide	7-methyl-4-oxo-N'-(p-tolylsulfonyl)-1H-quinazoline-2-carbohydrazide	372.40
C11H7NOS	pyrrolo[2,1-c][1,4]benzothiazin-4-one	NSC613290	201.25
C11H7F2N3OS2	2-(2,5-difluorophenyl)-3-(1,3,4-thiadiazol-2-yl)thiazolidin-4-one	NSC613343	299.30
C6H7N2NaO4S	(4-hydroxyphenyl)iminosulfamic acid;sodium hydride	(4-hydroxyphenyl)iminosulfamic acid;sodium hydride	226.19
C6H6N2O4S	(4-hydroxyphenyl)iminosulfamic acid	Agaridin	202.19
C48H71N15O12S	N-[2-[[2-[[1-[[2-[[2-[[1-[(1-carbamoyl-3-methylsulfanyl-propyl)carbamoyl]-3-methyl-butyl]amino]-1-(1H-imidazol-5-ylmethyl)-2-oxo-ethyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-1-methyl-2-oxo-ethyl]amino]-1-[(1-formylindol-3-yl)methyl]-2-oxo-ethyl]-2-[(2,4-diamino-4-oxo-butanoyl)amino]pentanediamide	N-[2-[[2-[[1-[[2-[[2-[[1-[(1-carbamoyl-3-methylsulfanyl-propyl)carbamoyl]-3-methyl-butyl]amino]-1-(1H-imidazol-5-ylmethyl)-2-oxo-ethyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-1-methyl-2-oxo-ethyl]amino]-1-[(1-formylindol-3-yl)methyl]-2-oxo-ethyl]-2-[(2,4-diamino-4-oxo-butanoyl)amino]pentanediamide	1082.20
C47H71N15O11S	N-[2-[[2-[[1-[[2-[[2-[[1-[(1-carbamoyl-3-methylsulfanyl-propyl)carbamoyl]-3-methyl-butyl]amino]-1-(1H-imidazol-5-ylmethyl)-2-oxo-ethyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-1-methyl-2-oxo-ethyl]amino]-1-(1H-indol-3-ylmethyl)-2-oxo-ethyl]-2-[(2,4-diamino-4-oxo-butanoyl)amino]pentanediamide	N-[2-[[2-[[1-[[2-[[2-[[1-[(1-carbamoyl-3-methylsulfanyl-propyl)carbamoyl]-3-methyl-butyl]amino]-1-(1H-imidazol-5-ylmethyl)-2-oxo-ethyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-1-methyl-2-oxo-ethyl]amino]-1-(1H-indol-3-ylmethyl)-2-oxo-ethyl]-2-[(2,4-diamino-4-oxo-butanoyl)amino]pentanediamide	1054.20
C7H7NOS	(5S)-7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-ol	NSC613556	153.20
C9H6F3NO2S	2,2,2-trifluoro-1-[(5S)-5-hydroxy-7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-3-yl]ethanone	NSC613557	249.21
C7H6ClNOS	7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-one;hydrochloride	NSC613558	187.65
C7H5NOS	7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-one	7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-one	151.19
C9H4F3NO2S	3-(2,2,2-trifluoroacetyl)-7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-one	1-(2,2,2-trifluoroacetyl)-1a,5b-dihydrothieno[2',3':4,5]cyclopenta[1,2-b]aziren-2(1H)-one	247.20
C4H8N2O3S	3-(hydrazinecarbonylsulfanyl)propanoic acid	NSC613585	164.19
C29H26N2O3S	N-[2-(1,2-diphenyl-6,7-dihydro-5H-pyrrolizin-3-yl)-1-(p-tolylsulfonyl)vinyl]formamide	N-[2-(1,2-diphenyl-6,7-dihydro-5H-pyrrolizin-3-yl)-1-(p-tolylsulfonyl)vinyl]formamide	482.60
C15H14ClNO2S	3-chloro-4-(dimethylamino)-5,6-dihydro-[1]benzothiepino[5,4-b]pyran-2-one	NSC613607	307.80
C14H17NO3S2	N,N-dimethyl-2,2-dioxo-3,4,5,6-tetrahydro-[1]benzothiepino[4,5-e]oxathiin-4-amine	NSC613608	311.40
C18H18N2O4S2	dimethyl 3,10-dithia-6,13-diazatricyclo[10.2.2.25,8]octadeca-1(15),5(18),6,8(17),12(16),13-hexaene-16,18-dicarboxylate	NSC613613	390.50
C9H13N3O2S	methyl 4-amino-2-pyrrolidin-1-yl-thiazole-5-carboxylate	99967-76-7	227.29
C8H12N4OS	4-amino-2-pyrrolidin-1-yl-thiazole-5-carboxamide	NSC613615	212.27
C9H10N4O2S	2-morpholino-4H-thiazolo[4,5-d]pyrimidin-7-one	2-morpholino-4H-thiazolo[4,5-d]pyrimidin-7-one	238.27
C15H15N5OS	2-(4-phenylpiperazin-1-yl)-4H-thiazolo[4,5-d]pyrimidin-7-one	2-(4-phenylpiperazin-1-yl)-4H-thiazolo[4,5-d]pyrimidin-7-one	313.40
C8H9N5O2S	6-morpholino-1H-thiazolo[4,5-d]triazin-4-one	6-morpholino-1H-thiazolo[4,5-d]triazin-4-one	239.26
C12H18IN5O3S	[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl-dimethyl-sulfonium iodide	Dimethylthioadenosine, iodide salt	439.28
C12H18N5O3S+	[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl-dimethyl-sulfonium	NCI60_004906	312.37
C11H12N4OS	[4-(6-sulfanylpurin-9-yl)cyclopent-2-en-1-yl]methanol	[4-(6-sulfanylpurin-9-yl)cyclopent-2-en-1-yl]methanol	248.31
C8H10N2O2S	8,10-dimethyl-3,5-dioxa-4lambda4-thia-2,6-diazatricyclo[5.3.1.04,11]undeca-1,4(11),6-triene	NSC614052	198.24
C13H13N3O2S	9,9-dimethyl-8-(2-pyridyl)-3,5-dioxa-4lambda4-thia-2,6-diazatricyclo[5.3.1.04,11]undeca-1,4(11),6-triene	NSC614053	275.33
C8H13NO2S	methyl 4-(4,5-dihydrothiazol-2-yl)butanoate	NSC614305	187.26
C10H7N2NaO8S	8-hydroxy-5,7-dinitro-naphthalene-2-sulfonic acid;sodium hydride	8-hydroxy-5,7-dinitro-naphthalene-2-sulfonic acid;sodium hydride	338.23
C46H71N13O14S	5-[[1-[[2-[[5-amino-1-[[(1S)-1-carboxyethyl]carbamoyl]pentyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-4-[[5-amino-2-[[2-[[2-[[(2S)-2,4-diamino-4-oxo-butanoyl]amino]-4-methylsulfanyl-butanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-5-oxo-pentanoyl]amino]-5-oxo-pentanoic acid	5-[[1-[[2-[[5-amino-1-[[(1S)-1-carboxyethyl]carbamoyl]pentyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-4-[[5-amino-2-[[2-[[2-[[(2S)-2,4-diamino-4-oxo-butanoyl]amino]-4-methylsulfanyl-butanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-5-oxo-pentanoyl]amino]-5-oxo-pentanoic acid	1062.20
C22H23N3O2S	7-methyl-6,8-diphenyl-spiro[3-thia-7-azabicyclo[3.3.1]nonane-9,5'-imidazolidine]-2',4'-dione	NSC614335	393.50
C26H22O7S3	[(3R,6R)-3,6-bis(benzenesulfonyl)cycloocta-1,4,7-trien-1-yl] benzenesulfonate	[(3R,6R)-3,6-bis(benzenesulfonyl)cycloocta-1,4,7-trien-1-yl] benzenesulfonate	542.60
C7H9N3OS2	1,1-dimethyl-3-methylsulfanyl-5-oxo-1lambda6-thia-2,6-diazacyclohexa-1,3,6-triene-4-carbonitrile	NSC614337	215.30
C11H9NO2S2	4-methoxy-6-(2-thienyl)-2H-thieno[3,2-b]pyrrol-5-one	NSC614342	251.30
C19H15N3O2S	2-(6-phenacyl-3-sulfanyl-1,2,4-triazin-5-yl)-1-phenyl-ethanone	2-(6-phenacyl-3-sulfanyl-1,2,4-triazin-5-yl)-1-phenyl-ethanone	349.40
C8H7N3OS	2-(5-amino-1,3,4-oxadiazol-2-yl)benzenethiol	NSC614445	193.23
C20H30N8O13P2S	[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-[[[5-(4-carbamoylthiazol-2-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl]methyl]phosphinic acid;ammonia	NSC614485	684.50
C20H27N7O13P2S	[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-[[[5-(4-carbamoylthiazol-2-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl]methyl]phosphinic acid	Sant7	667.50
C18H22O4S2	1-methyl-4-[4-(p-tolylsulfonyl)butylsulfonyl]benzene	94265-67-5	366.50

C15H21N3O4S2

2-methyl-6-[5-methyl-2,4-bis(methylsulfanyl)pyrrolo[2,3-d]pyrimidin-7-yl]tetrahydropyran-3,4,5-triol

NSC613056

371.50

C15H17N3O2S

N-(1-carbamoyl-3-methylsulfanyl-propyl)quinoline-3-carboxamide

NSC613216

303.40

C10H17N7OS2

3-[[3-[2-[amino(sulfanyl)methylene]hydrazino]-5,5-dimethyl-2-nitroso-cyclohex-2-en-1-ylidene]amino]isothiourea

315.40

C15H15N3OS

3-(N-benzyloxy-C-phenyl-carbonimidoyl)isothiourea

285.40

C20H12Cl2N7NaO11S2

4-chloro-5-[3-(2-chloro-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride

684.40

C20H12Cl2N7O11S2+

4-chloro-5-[3-(2-chloro-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonic acid

NCI60_004894

661.40

C21H17N6NaO12S2

4-methoxy-5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-phenyl-tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride

632.50

C21H17N6O12S2+

4-methoxy-5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-phenyl-tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonic acid

NSC613258

609.50

C21H16N7NaO12S2

5-[3-(2-methoxy-4-nitro-5-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-3-ium-2-yl]-2-nitro-benzenesulfonate;sodium hydride

645.50

C21H16N7O12S2+

4-methoxy-2-nitro-5-[3-(4-nitro-3-sulfo-phenyl)-5-(phenylcarbamoyl)tetrazol-2-ium-2-yl]benzenesulfonic acid

NSC613259

622.50

C16H14N4O4S

4-oxo-N'-(p-tolylsulfonyl)-1H-quinazoline-2-carbohydrazide

358.40

C17H16N4O4S

7-methyl-4-oxo-N'-(p-tolylsulfonyl)-1H-quinazoline-2-carbohydrazide

372.40

C11H7NOS

pyrrolo[2,1-c][1,4]benzothiazin-4-one

NSC613290

201.25

C11H7F2N3OS2

2-(2,5-difluorophenyl)-3-(1,3,4-thiadiazol-2-yl)thiazolidin-4-one

NSC613343

299.30

C6H7N2NaO4S

(4-hydroxyphenyl)iminosulfamic acid;sodium hydride

226.19

C6H6N2O4S

(4-hydroxyphenyl)iminosulfamic acid

Agaridin

202.19

C48H71N15O12S

N-[2-[[2-[[1-[[2-[[2-[[1-[(1-carbamoyl-3-methylsulfanyl-propyl)carbamoyl]-3-methyl-butyl]amino]-1-(1H-imidazol-5-ylmethyl)-2-oxo-ethyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-1-methyl-2-oxo-ethyl]amino]-1-[(1-formylindol-3-yl)methyl]-2-oxo-ethyl]-2-[(2,4-diamino-4-oxo-butanoyl)amino]pentanediamide

1082.20

C47H71N15O11S

N-[2-[[2-[[1-[[2-[[2-[[1-[(1-carbamoyl-3-methylsulfanyl-propyl)carbamoyl]-3-methyl-butyl]amino]-1-(1H-imidazol-5-ylmethyl)-2-oxo-ethyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-1-methyl-2-oxo-ethyl]amino]-1-(1H-indol-3-ylmethyl)-2-oxo-ethyl]-2-[(2,4-diamino-4-oxo-butanoyl)amino]pentanediamide

1054.20

C7H7NOS

(5S)-7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-ol

NSC613556

153.20

C9H6F3NO2S

2,2,2-trifluoro-1-[(5S)-5-hydroxy-7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-3-yl]ethanone

NSC613557

249.21

C7H6ClNOS

7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-one;hydrochloride

NSC613558

187.65

C7H5NOS

7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-one

151.19

C9H4F3NO2S

3-(2,2,2-trifluoroacetyl)-7-thia-3-azatricyclo[4.3.0.02,4]nona-1(6),8-dien-5-one

1-(2,2,2-trifluoroacetyl)-1a,5b-dihydrothieno[2',3':4,5]cyclopenta[1,2-b]aziren-2(1H)-one

247.20

C4H8N2O3S

3-(hydrazinecarbonylsulfanyl)propanoic acid

NSC613585

164.19

C29H26N2O3S

N-[2-(1,2-diphenyl-6,7-dihydro-5H-pyrrolizin-3-yl)-1-(p-tolylsulfonyl)vinyl]formamide

482.60

C15H14ClNO2S

3-chloro-4-(dimethylamino)-5,6-dihydro-[1]benzothiepino[5,4-b]pyran-2-one

NSC613607

307.80

C14H17NO3S2

N,N-dimethyl-2,2-dioxo-3,4,5,6-tetrahydro-[1]benzothiepino[4,5-e]oxathiin-4-amine

NSC613608

311.40

C18H18N2O4S2

dimethyl 3,10-dithia-6,13-diazatricyclo[10.2.2.25,8]octadeca-1(15),5(18),6,8(17),12(16),13-hexaene-16,18-dicarboxylate

NSC613613

390.50

C9H13N3O2S

methyl 4-amino-2-pyrrolidin-1-yl-thiazole-5-carboxylate

99967-76-7

227.29

C8H12N4OS

4-amino-2-pyrrolidin-1-yl-thiazole-5-carboxamide

NSC613615

212.27

C9H10N4O2S

2-morpholino-4H-thiazolo[4,5-d]pyrimidin-7-one

238.27

C15H15N5OS

2-(4-phenylpiperazin-1-yl)-4H-thiazolo[4,5-d]pyrimidin-7-one

313.40

C8H9N5O2S

6-morpholino-1H-thiazolo[4,5-d]triazin-4-one

239.26

C12H18IN5O3S

[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl-dimethyl-sulfonium iodide

Dimethylthioadenosine, iodide salt

439.28

C12H18N5O3S+

[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methyl-dimethyl-sulfonium

NCI60_004906

312.37

C11H12N4OS

[4-(6-sulfanylpurin-9-yl)cyclopent-2-en-1-yl]methanol

248.31

C8H10N2O2S

8,10-dimethyl-3,5-dioxa-4lambda4-thia-2,6-diazatricyclo[5.3.1.04,11]undeca-1,4(11),6-triene

NSC614052

198.24

C13H13N3O2S

9,9-dimethyl-8-(2-pyridyl)-3,5-dioxa-4lambda4-thia-2,6-diazatricyclo[5.3.1.04,11]undeca-1,4(11),6-triene

NSC614053

275.33

C8H13NO2S

methyl 4-(4,5-dihydrothiazol-2-yl)butanoate

NSC614305

187.26

C10H7N2NaO8S

8-hydroxy-5,7-dinitro-naphthalene-2-sulfonic acid;sodium hydride

338.23

C46H71N13O14S

5-[[1-[[2-[[5-amino-1-[[(1S)-1-carboxyethyl]carbamoyl]pentyl]amino]-2-oxo-ethyl]carbamoyl]-2-methyl-propyl]amino]-4-[[5-amino-2-[[2-[[2-[[(2S)-2,4-diamino-4-oxo-butanoyl]amino]-4-methylsulfanyl-butanoyl]amino]-3-(1H-indol-3-yl)propanoyl]amino]-5-oxo-pentanoyl]amino]-5-oxo-pentanoic acid

1062.20

C22H23N3O2S

7-methyl-6,8-diphenyl-spiro[3-thia-7-azabicyclo[3.3.1]nonane-9,5'-imidazolidine]-2',4'-dione

NSC614335

393.50

C26H22O7S3

[(3R,6R)-3,6-bis(benzenesulfonyl)cycloocta-1,4,7-trien-1-yl] benzenesulfonate

542.60

C7H9N3OS2

1,1-dimethyl-3-methylsulfanyl-5-oxo-1lambda6-thia-2,6-diazacyclohexa-1,3,6-triene-4-carbonitrile

NSC614337

215.30

C11H9NO2S2

4-methoxy-6-(2-thienyl)-2H-thieno[3,2-b]pyrrol-5-one

NSC614342

251.30

C19H15N3O2S

2-(6-phenacyl-3-sulfanyl-1,2,4-triazin-5-yl)-1-phenyl-ethanone

349.40

C8H7N3OS

2-(5-amino-1,3,4-oxadiazol-2-yl)benzenethiol

NSC614445

193.23

C20H30N8O13P2S

[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-[[[5-(4-carbamoylthiazol-2-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl]methyl]phosphinic acid;ammonia

NSC614485

684.50

C20H27N7O13P2S

[5-(6-aminopurin-9-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-[[[5-(4-carbamoylthiazol-2-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl]methyl]phosphinic acid

Sant7

667.50

C18H22O4S2

1-methyl-4-[4-(p-tolylsulfonyl)butylsulfonyl]benzene

94265-67-5

366.50

Hydrogen + Oxygen + Sulfur Compounds (H + O + S)