Record Information
Version1.0
Creation Date2016-05-22 03:39:26 UTC
Update Date2026-04-13 20:33:55 UTC
Accession NumberCHEM016650
Identification
Common NameCyclothiazide
ClassSmall Molecule
DescriptionAs a diuretic, cyclothiazide inhibits active chloride reabsorption at the early distal tubule via the Na-Cl cotransporter, resulting in an increase in the excretion of sodium, chloride, and water. Thiazides like cyclothiazide also inhibit sodium ion transport across the renal tubular epithelium through binding to the thiazide sensitive sodium-chloride transporter. This results in an increase in potassium excretion via the sodium-potassium exchange mechanism. The antihypertensive mechanism of cyclothiazide is less well understood although it may be mediated through its action on carbonic anhydrases in the smooth muscle or through its action on the large-conductance calcium-activated potassium (KCa) channel, also found in the smooth muscle. Cyclothiazide is indicated as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. It is also indicated in the management of hypertension either as the sole therapeutic agent or to enhance the effectiveness of other antihypertensive drugs in the more severe forms of hypertension.
Contaminant Sources
  • HMDB Contaminants - Urine
  • ToxCast & Tox21 Chemicals
Contaminant TypeNot Available
Chemical Structure
Thumb
Synonyms
ValueSource
6-Chloro-3,4-dihydro-3-(2-norbornen-5-yl)-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxideChEBI
6-Chloro-3,4-dihydro-3-(2-norbornen-5-yl)-7-sulfamoyl-1,2,4-benzothiadiazine 1,1-dioxideChEBI
6-Chloro-3,4-dihydro-3-(5-norbornen-2-yl)-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxideChEBI
6-Chloro-3-(2-norbornen-5-yl)-7-sulfamyl-3,4-dihydro-1,2,4-benzothiadiazine 1,1-dioxideChEBI
CiclotiazidaChEBI
CyclothiazidumChEBI
AnhydronKegg
6-Chloro-3,4-dihydro-3-(2-norbornen-5-yl)-2H-1,2,4-benzothiadiazine-7-sulphonamide 1,1-dioxideGenerator
6-Chloro-3,4-dihydro-3-(2-norbornen-5-yl)-7-sulphamoyl-1,2,4-benzothiadiazine 1,1-dioxideGenerator
6-Chloro-3,4-dihydro-3-(5-norbornen-2-yl)-2H-1,2,4-benzothiadiazine-7-sulphonamide 1,1-dioxideGenerator
6-Chloro-3-(2-norbornen-5-yl)-7-sulphamyl-3,4-dihydro-1,2,4-benzothiadiazine 1,1-dioxideGenerator
CiclotiazideHMDB
Chemical FormulaC14H16ClN3O4S2
Average Molecular Mass389.878 g/mol
Monoisotopic Mass389.027 g/mol
CAS Registry Number2259-96-3
IUPAC Name3-{bicyclo[2.2.1]hept-5-en-2-yl}-6-chloro-1,1-dioxo-3,4-dihydro-2H-1λ⁶,2,4-benzothiadiazine-7-sulfonamide
Traditional Namecyclothiazide
SMILESNS(=O)(=O)C1=C(Cl)C=C2NC(NS(=O)(=O)C2=C1)C1CC2CC1C=C2
InChI IdentifierInChI=1S/C14H16ClN3O4S2/c15-10-5-11-13(6-12(10)23(16,19)20)24(21,22)18-14(17-11)9-4-7-1-2-8(9)3-7/h1-2,5-9,14,17-18H,3-4H2,(H2,16,19,20)
InChI KeyBOCUKUHCLICSIY-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as 1,2,4-benzothiadiazine-1,1-dioxides. These are aromatic heterocyclic compounds containing a 1,2,4-benzothiadiazine ring system with two S=O bonds at the 1-position.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassThiadiazines
Sub ClassBenzothiadiazines
Direct Parent1,2,4-benzothiadiazine-1,1-dioxides
Alternative Parents
Substituents
  • 1,2,4-benzothiadiazine-1,1-dioxide
  • Secondary aliphatic/aromatic amine
  • Aryl chloride
  • Aryl halide
  • Organosulfonic acid amide
  • Benzenoid
  • Organic sulfonic acid or derivatives
  • Organosulfonic acid or derivatives
  • Aminosulfonyl compound
  • Sulfonyl
  • Secondary amine
  • Azacycle
  • Organic oxide
  • Amine
  • Organopnictogen compound
  • Organosulfur compound
  • Organonitrogen compound
  • Organochloride
  • Organohalogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.28 g/LALOGPS
logP1.32ALOGPS
logP0.94ChemAxon
logS-3.2ALOGPS
pKa (Strongest Acidic)9.06ChemAxon
pKa (Strongest Basic)-2.5ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area118.36 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity92.65 m³·mol⁻¹ChemAxon
Polarizability37.1 ųChemAxon
Number of Rings4ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-016u-9133000000-93e2b7d86e56b630140dSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0006-0009000000-a75423eac08147027ff0Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0596-0629000000-2e3acef52ea168edcc37Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0uei-3691000000-be00a0c434bc4cd8b71bSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-059i-0009000000-be104b4d7d376f5e3166Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00fr-9707000000-ad653225ea24c021e331Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004l-9000000000-2690cb233bbed98f3652Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0006-0009000000-64cd4a4b5b37d098a23aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0006-0009000000-6253f7a477fe74bfc21dSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-052f-9644000000-7357e78e11d940fc0f75Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-0009000000-733060bf4799a6320f93Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-000i-2009000000-66e570b5f08162e4e541Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004i-9640000000-f157eafa7f76c2f8ea73Spectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDDB00606
HMDB IDHMDB0014744
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkCyclothiazide
Chemspider ID2807
ChEBI ID31448
PubChem Compound ID2910
Kegg Compound IDC12685
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References
1. https://www.ncbi.nlm.nih.gov/pubmed/?term=19338354