Benzothiazines

Aromatic organic heterocyclic compounds that consist of benzene fused with a thiazine; thiazines are six-membered rings that contain four carbon atoms, one nitrogen atom, and one sulfur atom.

1 – 15 of 89 results

2-Methyl-3,4-dihydro-2H-1,4-benzothiazine, 97%, Thermo Scientific Chemicals

CAS: 58960-00-2 Molecular Formula: C9H11NS Molecular Weight (g/mol): 165.254 MDL Number: MFCD12027245 InChI Key: QZSCUJZRZIIVBM-UHFFFAOYSA-N Synonym: 2h-1,4-benzothiazine, 3,4-dihydro-2-methyl,3,4-dihydro-2-methyl-2h-1,4-benzothiazine,2-methyl-3,4-dihydro-2h-benzo b 1,4 thiazine PubChem CID: 13183653 IUPAC Name: 2-methyl-3,4-dihydro-2H-1,4-benzothiazine SMILES: CC1CNC2=CC=CC=C2S1

Pricing and Availability
Specifications

PubChem CID	13183653
CAS	58960-00-2
Molecular Weight (g/mol)	165.254
MDL Number	MFCD12027245
SMILES	CC1CNC2=CC=CC=C2S1
Synonym	2h-1,4-benzothiazine, 3,4-dihydro-2-methyl,3,4-dihydro-2-methyl-2h-1,4-benzothiazine,2-methyl-3,4-dihydro-2h-benzo b 1,4 thiazine
IUPAC Name	2-methyl-3,4-dihydro-2H-1,4-benzothiazine
InChI Key	QZSCUJZRZIIVBM-UHFFFAOYSA-N
Molecular Formula	C9H11NS

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Thermo Scientific Chemicals Meloxicam, 99-101%

CAS: 71125-38-7 Molecular Formula: C14H13N3O4S2 Molecular Weight (g/mol): 351.40 MDL Number: MFCD00868752 InChI Key: DWMREKMVXIFPFM-ACCUITESSA-N Synonym: meloxicam,mobic,metacam,movalis,meloxicamum,mobicox,mobec,meloxicam mobic,movatec,parocin PubChem CID: 54677470 ChEBI: CHEBI:6741 IUPAC Name: 4-hydroxy-2-methyl-N-(5-methyl-1,3-thiazol-2-yl)-1,1-dioxo-1$l^{6},2-benzothiazine-3-carboxamide SMILES: CN1\C(=C(\O)NC2=NC=C(C)S2)C(=O)C2=CC=CC=C2S1(=O)=O

Pricing and Availability
Specifications

PubChem CID	54677470
CAS	71125-38-7
Molecular Weight (g/mol)	351.40
ChEBI	CHEBI:6741
MDL Number	MFCD00868752
SMILES	CN1\C(=C(\O)NC2=NC=C(C)S2)C(=O)C2=CC=CC=C2S1(=O)=O
Synonym	meloxicam,mobic,metacam,movalis,meloxicamum,mobicox,mobec,meloxicam mobic,movatec,parocin
IUPAC Name	4-hydroxy-2-methyl-N-(5-methyl-1,3-thiazol-2-yl)-1,1-dioxo-1$l^{6},2-benzothiazine-3-carboxamide
InChI Key	DWMREKMVXIFPFM-ACCUITESSA-N
Molecular Formula	C14H13N3O4S2

Azure I

CAS: 531-55-5 Molecular Formula: C15H16ClN3S Molecular Weight (g/mol): 305.824 MDL Number: MFCD00011935 InChI Key: DNDJEIWCTMMZBX-UHFFFAOYSA-N Synonym: azure b,azure i,methylene azure b,3-dimethylamino-7-methylamino phenothiazin-5-ium chloride,trimethylthionine chloride,azur i,methyleneazure,methylene azure van,unii-7c8bel8wqv,modr kresylova bb czech PubChem CID: 68275 IUPAC Name: dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium;chloride SMILES: CNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]

Pricing and Availability
Specifications

PubChem CID	68275
CAS	531-55-5
Molecular Weight (g/mol)	305.824
MDL Number	MFCD00011935
SMILES	CNC1=CC2=C(C=C1)N=C3C=CC(=[N+](C)C)C=C3S2.[Cl-]
Synonym	azure b,azure i,methylene azure b,3-dimethylamino-7-methylamino phenothiazin-5-ium chloride,trimethylthionine chloride,azur i,methyleneazure,methylene azure van,unii-7c8bel8wqv,modr kresylova bb czech
IUPAC Name	dimethyl-[7-(methylamino)phenothiazin-3-ylidene]azanium;chloride
InChI Key	DNDJEIWCTMMZBX-UHFFFAOYSA-N
Molecular Formula	C15H16ClN3S

7-Bromo-3,4-dihydro-2H-1,4-benzothiazine, 97%, Thermo Scientific Chemicals

CAS: 193414-60-7 Molecular Formula: C8H8BrNS Molecular Weight (g/mol): 230.12 MDL Number: MFCD11847754 InChI Key: QWWYGAWGUCQKDL-UHFFFAOYSA-N Synonym: 7-bromo-3,4-dihydro-2h-benzo b 1,4 thiazine PubChem CID: 83823811 IUPAC Name: 7-bromo-3,4-dihydro-2H-1,4-benzothiazine SMILES: BrC1=CC2=C(NCCS2)C=C1

Pricing and Availability
Specifications

PubChem CID	83823811
CAS	193414-60-7
Molecular Weight (g/mol)	230.12
MDL Number	MFCD11847754
SMILES	BrC1=CC2=C(NCCS2)C=C1
Synonym	7-bromo-3,4-dihydro-2h-benzo b 1,4 thiazine
IUPAC Name	7-bromo-3,4-dihydro-2H-1,4-benzothiazine
InChI Key	QWWYGAWGUCQKDL-UHFFFAOYSA-N
Molecular Formula	C8H8BrNS

7-Bromo-2H-1,4-benzothiazin-3(4H)-one, 97%

CAS: 90814-91-8 Molecular Formula: C8H6BrNOS Molecular Weight (g/mol): 244.11 MDL Number: MFCD02660583 InChI Key: MDFPWMKBRDOSGB-UHFFFAOYSA-N Synonym: 7-bromo-2h-1,4-benzothiazin-3 4h-one,7-bromo-2h-benzo b 1,4 thiazin-3 4h-one,7-bromo-3,4-dihydro-2h-1,4-benzothiazin-3-one,7-bromo-2h,4h-benzo e 1,4-thiazin-3-one,7-bromo-2,4-dihydro-1,4-benzothiazin-3-one,2h-1,4-benzothiazin-3 4h-one, 7-bromo,7-bromo-4h-benzo 1,4 thiazin-3-one PubChem CID: 689065 SMILES: BrC1=CC2=C(NC(=O)CS2)C=C1

Pricing and Availability
Specifications

PubChem CID	689065
CAS	90814-91-8
Molecular Weight (g/mol)	244.11
MDL Number	MFCD02660583
SMILES	BrC1=CC2=C(NC(=O)CS2)C=C1
Synonym	7-bromo-2h-1,4-benzothiazin-3 4h-one,7-bromo-2h-benzo b 1,4 thiazin-3 4h-one,7-bromo-3,4-dihydro-2h-1,4-benzothiazin-3-one,7-bromo-2h,4h-benzo e 1,4-thiazin-3-one,7-bromo-2,4-dihydro-1,4-benzothiazin-3-one,2h-1,4-benzothiazin-3 4h-one, 7-bromo,7-bromo-4h-benzo 1,4 thiazin-3-one
InChI Key	MDFPWMKBRDOSGB-UHFFFAOYSA-N
Molecular Formula	C8H6BrNOS

Methyl 3-oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylate, 97%

CAS: 188614-01-9 Molecular Formula: C10H9NO3S Molecular Weight (g/mol): 223.25 MDL Number: MFCD00449104 InChI Key: UFSVRHNRNVVBJR-UHFFFAOYSA-N PubChem CID: 699501 IUPAC Name: methyl 3-oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylate SMILES: COC(=O)C1=CC2=C(SCC(=O)N2)C=C1

Pricing and Availability
Specifications

PubChem CID	699501
CAS	188614-01-9
Molecular Weight (g/mol)	223.25
MDL Number	MFCD00449104
SMILES	COC(=O)C1=CC2=C(SCC(=O)N2)C=C1
IUPAC Name	methyl 3-oxo-3,4-dihydro-2H-1,4-benzothiazine-6-carboxylate
InChI Key	UFSVRHNRNVVBJR-UHFFFAOYSA-N
Molecular Formula	C10H9NO3S

6-Bromo-3,4-dihydro-2H-1,4-benzothiazine, 97%

CAS: 187604-75-7 Molecular Formula: C8H8BrNS Molecular Weight (g/mol): 230.123 MDL Number: MFCD23379863 InChI Key: AUIBYERXYVUBIL-UHFFFAOYSA-N Synonym: 6-bromo-3,4-dihydro-2h-benzo b 1,4 thiazine PubChem CID: 67172430 IUPAC Name: 6-bromo-3,4-dihydro-2H-1,4-benzothiazine SMILES: C1CSC2=C(N1)C=C(C=C2)Br

Pricing and Availability
Specifications

PubChem CID	67172430
CAS	187604-75-7
Molecular Weight (g/mol)	230.123
MDL Number	MFCD23379863
SMILES	C1CSC2=C(N1)C=C(C=C2)Br
Synonym	6-bromo-3,4-dihydro-2h-benzo b 1,4 thiazine
IUPAC Name	6-bromo-3,4-dihydro-2H-1,4-benzothiazine
InChI Key	AUIBYERXYVUBIL-UHFFFAOYSA-N
Molecular Formula	C8H8BrNS

7-Nitro-3,4-dihydro-2H-1,4-benzothiazine, 97%, Thermo Scientific Chemicals

CAS: 69373-37-1 Molecular Formula: C8H8N2O2S Molecular Weight (g/mol): 196.22 MDL Number: MFCD23379852 InChI Key: LCOAYUPAESYAHF-UHFFFAOYSA-N Synonym: 7-nitro-3,4-dihydro-2h-benzo b 1,4 thiazine PubChem CID: 20496121 IUPAC Name: 7-nitro-3,4-dihydro-2H-1,4-benzothiazine SMILES: [O-][N+](=O)C1=CC2=C(NCCS2)C=C1

Pricing and Availability
Specifications

PubChem CID	20496121
CAS	69373-37-1
Molecular Weight (g/mol)	196.22
MDL Number	MFCD23379852
SMILES	[O-][N+](=O)C1=CC2=C(NCCS2)C=C1
Synonym	7-nitro-3,4-dihydro-2h-benzo b 1,4 thiazine
IUPAC Name	7-nitro-3,4-dihydro-2H-1,4-benzothiazine
InChI Key	LCOAYUPAESYAHF-UHFFFAOYSA-N
Molecular Formula	C8H8N2O2S

Thermo Scientific Chemicals Giemsa Stain

CAS: 51811-82-6 Molecular Formula: C14H14ClN3S Molecular Weight (g/mol): 291.80 MDL Number: MFCD00012112,MFCD00081642 InChI Key: NALREUIWICQLPS-UHFFFAOYSA-N Synonym: azure a,dimethylthionine,giemsa stain,azur a,n,n-dimethylthionine,3-amino-7-dimethylamino phenothiazin-5-ium chloride,methylene azure a,giemsa solution,3-amino-7-dimethylaminophenazathionium chloride,unii-m731v243ef PubChem CID: 13735 IUPAC Name: (7-aminophenothiazin-3-ylidene)-dimethylazanium;chloride SMILES: [Cl-].C[N+](C)=C1C=CC2=NC3=CC=C(N)C=C3SC2=C1

Pricing and Availability
Specifications

PubChem CID	13735
CAS	51811-82-6
Molecular Weight (g/mol)	291.80
MDL Number	MFCD00012112,MFCD00081642
SMILES	[Cl-].C[N+](C)=C1C=CC2=NC3=CC=C(N)C=C3SC2=C1
Synonym	azure a,dimethylthionine,giemsa stain,azur a,n,n-dimethylthionine,3-amino-7-dimethylamino phenothiazin-5-ium chloride,methylene azure a,giemsa solution,3-amino-7-dimethylaminophenazathionium chloride,unii-m731v243ef
IUPAC Name	(7-aminophenothiazin-3-ylidene)-dimethylazanium;chloride
InChI Key	NALREUIWICQLPS-UHFFFAOYSA-N
Molecular Formula	C14H14ClN3S

3,4-Dihydro-2H-1,4-benzothiazine, 97%

CAS: 3080-99-7 Molecular Formula: C8H9NS Molecular Weight (g/mol): 151.23 MDL Number: MFCD04038593 InChI Key: YBBLSBDJIKMXNQ-UHFFFAOYSA-N Synonym: 3,4-dihydro-2h-benzo b 1,4 thiazine,2,3-dihydro-1,4-benzothiazine,3,4-dihydro-2h-benzo 1,4 thiazine,2h-1,4-benzothiazine, 3,4-dihydro,benzothiomorpholine,thiaphenomorpholine,2,3-dihydrobenzo-1,4-thiazine,2,3-dihydro-4h-1,4-benzothiazine,2h,3h,4h-benzo e 1,4-thiazine,2h-1,4-benzothiazine,3,4-dihydro PubChem CID: 151064 IUPAC Name: 3,4-dihydro-2H-1,4-benzothiazine SMILES: C1CSC2=CC=CC=C2N1

Pricing and Availability
Specifications

PubChem CID	151064
CAS	3080-99-7
Molecular Weight (g/mol)	151.23
MDL Number	MFCD04038593
SMILES	C1CSC2=CC=CC=C2N1
Synonym	3,4-dihydro-2h-benzo b 1,4 thiazine,2,3-dihydro-1,4-benzothiazine,3,4-dihydro-2h-benzo 1,4 thiazine,2h-1,4-benzothiazine, 3,4-dihydro,benzothiomorpholine,thiaphenomorpholine,2,3-dihydrobenzo-1,4-thiazine,2,3-dihydro-4h-1,4-benzothiazine,2h,3h,4h-benzo e 1,4-thiazine,2h-1,4-benzothiazine,3,4-dihydro
IUPAC Name	3,4-dihydro-2H-1,4-benzothiazine
InChI Key	YBBLSBDJIKMXNQ-UHFFFAOYSA-N
Molecular Formula	C8H9NS

1,9-Dimethyl-methylene Blue Zinc Chloride Double Salt (Technical Grade), TRC

CAS: 931418-92-7 Molecular Formula: 2 C18 H22 N3 S . 2Cl . Zn Cl2 Molecular Weight (g/mol): 832.12 Synonym: 1,9-Dimethyl-Methylene Blue Zinc Chloride Double Salt IUPAC Name: bis(3,7-bis(dimethylamino)-1,9-dimethylphenothiazin-5-ium) zinc(II) chloride SMILES: CC1=C2C([S+]=C(C3=N2)C=C(C=C3C)N(C)C)=CC(N(C)C)=C1.CC4=C5C([S+]=C(C6=N5)C=C(C=C6C)N(C)C)=CC(N(C)C)=C4.Cl[Zn]Cl.[Cl-].[Cl-]

Pricing and Availability
Specifications

CAS	931418-92-7
Molecular Weight (g/mol)	832.12
SMILES	CC1=C2C([S+]=C(C3=N2)C=C(C=C3C)N(C)C)=CC(N(C)C)=C1.CC4=C5C([S+]=C(C6=N5)C=C(C=C6C)N(C)C)=CC(N(C)C)=C4.Cl[Zn]Cl.[Cl-].[Cl-]
Synonym	1,9-Dimethyl-Methylene Blue Zinc Chloride Double Salt
IUPAC Name	bis(3,7-bis(dimethylamino)-1,9-dimethylphenothiazin-5-ium) zinc(II) chloride
Molecular Formula	2 C18 H22 N3 S . 2Cl . Zn Cl2

Prochlorperazine Dimaleate, TRC

CAS: 84-02-6 Molecular Formula: C20 H24 Cl N3 S . 2 C4 H4 O4 Molecular Weight (g/mol): 606.09 Synonym: Prochlorperazine maleate,2-Chloro-10-[3-(4-methylpiperazin-1-yl)propyl]-10H-phenothiazine bis[hydrogen (Z)-butenedioate],10H-Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, (2Z)-2-butenedioate (1:2),10H-Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, (Z)-2-butenedioate (1:2),Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, dimaleate (6CI),Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, maleate (1:2) (8CI),2-Chloro-10-[3-(4-methyl-1-piperazinyl)propyl]phenothiazine dimaleate,Buccastem,Compazine,Emetiral,Meterazin maleate,Pasotomin,Prochloroperazine dimaleate,Prochlorperazine dimaleate,Prochlorperazine hydrogen maleate,Prochlorperazine maleate,Stemetil,Stemetil dimaleate,Vertigon IUPAC Name: (Z)-but-2-enedioic acid;2-chloro-10-[3-(4-methylpiperazin-1-yl)propyl]phenothiazine SMILES: CN1CCN(CCCN2c3ccccc3Sc4ccc(Cl)cc24)CC1.OC(=O)\C=C/C(=O)O.OC(=O)\C=C/C(=O)O

Pricing and Availability
Specifications

CAS	84-02-6
Molecular Weight (g/mol)	606.09
SMILES	CN1CCN(CCCN2c3ccccc3Sc4ccc(Cl)cc24)CC1.OC(=O)\C=C/C(=O)O.OC(=O)\C=C/C(=O)O
Synonym	Prochlorperazine maleate,2-Chloro-10-[3-(4-methylpiperazin-1-yl)propyl]-10H-phenothiazine bis[hydrogen (Z)-butenedioate],10H-Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, (2Z)-2-butenedioate (1:2),10H-Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, (Z)-2-butenedioate (1:2),Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, dimaleate (6CI),Phenothiazine, 2-chloro-10-[3-(4-methyl-1-piperazinyl)propyl]-, maleate (1:2) (8CI),2-Chloro-10-[3-(4-methyl-1-piperazinyl)propyl]phenothiazine dimaleate,Buccastem,Compazine,Emetiral,Meterazin maleate,Pasotomin,Prochloroperazine dimaleate,Prochlorperazine dimaleate,Prochlorperazine hydrogen maleate,Prochlorperazine maleate,Stemetil,Stemetil dimaleate,Vertigon
IUPAC Name	(Z)-but-2-enedioic acid;2-chloro-10-[3-(4-methylpiperazin-1-yl)propyl]phenothiazine
Molecular Formula	C20 H24 Cl N3 S . 2 C4 H4 O4

Isopropyl 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide (Piroxicam Impurity L), TRC

CAS: 118854-48-1 Molecular Formula: C13 H15 N O5 S Molecular Weight (g/mol): 297.33 Synonym: Isopropyl 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide,1-Methylethyl 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide,Meloxicam Imp. F (EP),Piroxicam Imp. L (EP) IUPAC Name: propan-2-yl 4-hydroxy-2-methyl-1,1-dioxo-1λ^{6},2-benzothiazine-3-carboxylate SMILES: CC(C)OC(=O)C1=C(O)c2ccccc2S(=O)(=O)N1C

Pricing and Availability
Specifications

CAS	118854-48-1
Molecular Weight (g/mol)	297.33
SMILES	CC(C)OC(=O)C1=C(O)c2ccccc2S(=O)(=O)N1C
Synonym	Isopropyl 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide,1-Methylethyl 4-Hydroxy-2-methyl-2H-1,2-benzothiazine-3-carboxylate 1,1-Dioxide,Meloxicam Imp. F (EP),Piroxicam Imp. L (EP)
IUPAC Name	propan-2-yl 4-hydroxy-2-methyl-1,1-dioxo-1λ^{6},2-benzothiazine-3-carboxylate
Molecular Formula	C13 H15 N O5 S

N-Propargyl Phenothiazine, TRC

CAS: 4282-78-4 Molecular Formula: C15H11NS Molecular Weight (g/mol): 237.32 Synonym: 10-Propargylphenothiazine,10-(2-Propyn-1-yl)-10H-phenothiazine IUPAC Name: 10-prop-2-ynylphenothiazine SMILES: C#CCN1c2ccccc2Sc3ccccc13

Pricing and Availability
Specifications

CAS	4282-78-4
Molecular Weight (g/mol)	237.32
SMILES	C#CCN1c2ccccc2Sc3ccccc13
Synonym	10-Propargylphenothiazine,10-(2-Propyn-1-yl)-10H-phenothiazine
IUPAC Name	10-prop-2-ynylphenothiazine
Molecular Formula	C15H11NS

Perphenazine, TRC

CAS: 58-39-9 Molecular Formula: C21 H26 Cl N3 O S Molecular Weight (g/mol): 403.97 Synonym: 1-Piperazineethanol, 4-[3-(2-chlorophenothiazin-10-yl)propyl]- (8CI),4-[3-(2-Chloro-10H-phenothiazin-10-yl)propyl]-1-piperazineethanol,1-(2-Hydroxyethyl)-4-[3-(2-chloro-10-phenothiazinyl)propyl]piperazine,2-Chloro-10-3-[1-(2-hydroxyethyl)-4-piperazinyl] propyl phenothiazine,2-Chloro-10-[3-[4-(2-hydroxyethyl)piperazin-1-yl]propyl]phenothiazine,Chloriprozine,Chlorperphenazine,Decentan,Emesinal,Etaperazin,Etaperazine,Ethaperazine,Fentazin,Fentazin syrup,Fentazine duolets,Mutabom,NSC 150866,PZC,PZC (tranquilizer),Perfenazine,Perfenil,Perphenan,Perphenazin,Perphenazine,Sch 3940,Thilatazin,Tranquisan,Trifaron,Trilafon,Trilifan,Triphenot,γ-[4-(β-Hydroxyethyl)piperazin-1-yl]propyl-2-chlorophenothiazine IUPAC Name: 2-[4-[3-(2-chlorophenothiazin-10-yl)propyl]piperazin-1-yl]ethanol SMILES: OCCN1CCN(CCCN2c3ccccc3Sc4ccc(Cl)cc24)CC1

Pricing and Availability
Specifications

CAS	58-39-9
Molecular Weight (g/mol)	403.97
SMILES	OCCN1CCN(CCCN2c3ccccc3Sc4ccc(Cl)cc24)CC1
Synonym	1-Piperazineethanol, 4-[3-(2-chlorophenothiazin-10-yl)propyl]- (8CI),4-[3-(2-Chloro-10H-phenothiazin-10-yl)propyl]-1-piperazineethanol,1-(2-Hydroxyethyl)-4-[3-(2-chloro-10-phenothiazinyl)propyl]piperazine,2-Chloro-10-3-[1-(2-hydroxyethyl)-4-piperazinyl] propyl phenothiazine,2-Chloro-10-[3-[4-(2-hydroxyethyl)piperazin-1-yl]propyl]phenothiazine,Chloriprozine,Chlorperphenazine,Decentan,Emesinal,Etaperazin,Etaperazine,Ethaperazine,Fentazin,Fentazin syrup,Fentazine duolets,Mutabom,NSC 150866,PZC,PZC (tranquilizer),Perfenazine,Perfenil,Perphenan,Perphenazin,Perphenazine,Sch 3940,Thilatazin,Tranquisan,Trifaron,Trilafon,Trilifan,Triphenot,γ-[4-(β-Hydroxyethyl)piperazin-1-yl]propyl-2-chlorophenothiazine
IUPAC Name	2-[4-[3-(2-chlorophenothiazin-10-yl)propyl]piperazin-1-yl]ethanol
Molecular Formula	C21 H26 Cl N3 O S

Benzothiazines

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