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2D Structure
Also known as: 133-67-5, Trichloromethiazide, Naqua, Metahydrin, Trichlormetazid, Achletin
Molecular Formula
C8H8Cl3N3O4S2
Molecular Weight
380.7  g/mol
InChI Key
LMJSLTNSBFUCMU-UHFFFAOYSA-N
FDA UNII
Q58C92TUN0

A thiazide diuretic with properties similar to those of HYDROCHLOROTHIAZIDE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p830)
1 2D Structure

2D Structure

2 Identification
2.1 Computed Descriptors
2.1.1 IUPAC Name
6-chloro-3-(dichloromethyl)-1,1-dioxo-3,4-dihydro-2H-16,2,4-benzothiadiazine-7-sulfonamide
2.1.2 InChI
InChI=1S/C8H8Cl3N3O4S2/c9-3-1-4-6(2-5(3)19(12,15)16)20(17,18)14-8(13-4)7(10)11/h1-2,7-8,13-14H,(H2,12,15,16)
2.1.3 InChI Key
LMJSLTNSBFUCMU-UHFFFAOYSA-N
2.1.4 Canonical SMILES
C1=C2C(=CC(=C1Cl)S(=O)(=O)N)S(=O)(=O)NC(N2)C(Cl)Cl
2.2 Other Identifiers
2.2.1 UNII
Q58C92TUN0
2.3 Synonyms
2.3.1 MeSH Synonyms

1. Aquazide

2. Naqua

3. Triazide

4. Trichloromethiazide

2.3.2 Depositor-Supplied Synonyms

1. 133-67-5

2. Trichloromethiazide

3. Naqua

4. Metahydrin

5. Trichlormetazid

6. Achletin

7. Trichlormethiazid

8. Diu-hydrin

9. Chlopolidine

10. Hydrotrichlorothiazide

11. Aponorin

12. Cretonin

13. Diurazida

14. Diuroral

15. Fluitran

16. Gangesol

17. Intromene

18. Isestran

19. Schebitran

20. Triflumen

21. Diurese

22. Esmarin

23. Flutra

24. Nakva

25. Triclordiuride

26. Anistadin

27. Carvacron

28. Kubacron

29. Tachionin

30. Tolcasone

31. Eurinol

32. Triclormetiazide

33. Trichloromethiadiazide

34. Triclormetiazida

35. Ciba 7057-su

36. Trichlormethiazidum

37. 3-dichloromethylhydrochlorothiazide

38. 2h-1,2,4-benzothiadiazine-7-sulfonamide, 6-chloro-3-(dichloromethyl)-3,4-dihydro-, 1,1-dioxide

39. Nsc 61560

40. Brn 0629145

41. 3-dichloromethyl-6-chloro-7-sulfamyl-3,4-dihydro-1,2,4-benzothiadiazine 1,1-dioxide

42. 6-chloro-3-(dichloromethyl)-1,1-dioxo-3,4-dihydro-2h-1$l^{6},2,4-benzothiadiazine-7-sulfonamide

43. Trichlormas

44. Nsc-61560

45. 3-dichloromethyl-6-chloro-7-sulfamoyl-3,4-dihydro-1,2,4-benzothiadiazine-1,1-dioxide

46. 6-chloro-3-(dichloromethyl)3,4-dihydro-7-sulfamyl-1,2,4-benzothiadiazine-1,1-dioxide

47. Mls000028705

48. Chebi:9683

49. Q58c92tun0

50. Trichlordiuride

51. 6-chloro-3-(dichloromethyl)-3,4-dihydro-2h-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide

52. Salurin (wadel)

53. 6-chloro-3-(dichloromethyl)-3,4-dihydro-2h-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide

54. Naquasone

55. Smr000058712

56. Dsstox_cid_3699

57. Triclormetiazide [dcit]

58. Dsstox_rid_77154

59. Dsstox_gsid_23699

60. 6-chloro-3-(dichloromethyl)-1,1-dioxo-3,4-dihydro-2h-1lambda6,2,4-benzothiadiazine-7-sulfonamide

61. Triclormetiazide [italian]

62. Trichlormethiazidum [inn-latin]

63. Naqua (tn)

64. Triclormetiazida [inn-spanish]

65. Hsdb 3406

66. Trichloromethiazide, 6

67. Sr-01000000284

68. Einecs 205-118-8

69. Unii-q58c92tun0

70. Ncgc00016398-01

71. Trichlormethiazide [usp:inn:jan]

72. 6-chloro-3-(dichloromethyl)-1,1-dioxo-3,4-dihydro-2h-1?^{6},2,4-benzothiadiazine-7-sulfonamide

73. Cas-133-67-5

74. Prestwick_1020

75. 3-dichloromethyl-6-chloro-7-sulfamyl-3,4-dihydro-1,2,4-benzothiadiazine1,1-dioxide

76. 6-chloro-3-dichloromethyl-7-sulfamyl-3,4-dihydro-1,2,4-benzothiadiazine1,1-dioxide

77. Spectrum_000520

78. Opera_id_1588

79. Prestwick0_000825

80. Prestwick1_000825

81. Prestwick2_000825

82. Prestwick3_000825

83. Spectrum2_000948

84. Spectrum3_001373

85. Spectrum4_000367

86. Spectrum5_001074

87. 3-(dichloromethyl)-6-chloro-7-sulfamoyl-3,4-dihydro-1,2,4-benzothiadiazine 1,1-dioxide

88. 6-chloro-3-dichloromethyl-3,4-dihydro-2h-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide

89. Chembl1054

90. Nciopen2_007750

91. Trichlormethiazide, >=98%

92. Schembl25492

93. Bspbio_000749

94. Bspbio_002926

95. Kbiogr_000833

96. Kbioss_001000

97. Trichlormethiazide (achletin)

98. (+-)-6-chloro-3-(dichloromethyl)-3,4-dihydro-2h-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide

99. Mls001076545

100. Divk1c_000366

101. Spectrum1500590

102. Spbio_000916

103. Spbio_002670

104. Trichlormethiazide [mi]

105. Bpbio1_000825

106. Gtpl7314

107. Trichlormethiazide [inn]

108. Trichlormethiazide [jan]

109. Dtxsid7023699

110. Bdbm26998

111. Hms501c08

112. Kbio1_000366

113. Kbio2_001000

114. Kbio2_003568

115. Kbio2_006136

116. Kbio3_002146

117. Trichlormethiazide [hsdb]

118. Trichlormethiazide [vandf]

119. Ninds_000366

120. Hms1570f11

121. Hms1921g13

122. Hms2090g08

123. Hms2092o19

124. Hms2097f11

125. Hms2235k21

126. Hms3371b09

127. Hms3655i17

128. Hms3714f11

129. Pharmakon1600-01500590

130. Trichlormethiazide [mart.]

131. Trichlormethiazide [usp-rs]

132. Trichlormethiazide [who-dd]

133. Hy-b0235

134. Nsc61560

135. Tox21_110421

136. Mfcd00057315

137. Nsc757368

138. S1667

139. Trichlormethiazide (jp17/usp/inn)

140. Akos024374993

141. Tox21_110421_1

142. Ccg-212834

143. Db01021

144. Nsc-757368

145. Trichlormethiazide [green Book]

146. 6-chloro-3-(dichloromethyl)3,4-dihydro-7-sulfamoyl-1,2,4-benzothiadiazine-1,1-dioxide

147. Idi1_000366

148. Trichlormethiazide [orange Book]

149. Ncgc00018302-02

150. Ncgc00018302-03

151. Ncgc00018302-04

152. Ncgc00018302-07

153. Ncgc00018302-08

154. Ncgc00089756-02

155. Ncgc00089756-03

156. 2h-1,2,4-benzothiadiazine-7-sulfonamide, 6-chloro-3-(dichloromethyl)-3,4-dihydro-, 1,1-dioxide, (+-)-

157. As-56976

158. Trichlormethiazide [usp Monograph]

159. Sbi-0051544.p002

160. Naquival Component Trichlormethiazide

161. Wln: T66 Bswm Em Dhj Dygg Hg Iszw

162. Ab00052117

163. Ft-0746865

164. Sw197095-3

165. T1318

166. Metatensin Component Trichlormethiazide

167. Trichlormethiazide Metahydrin Naqua Trichlorex

168. C07767

169. C72338

170. D00658

171. Trichlormethiazide Component Of Naquival

172. Ab00052117-15

173. Ab00052117_16

174. Ab00052117_17

175. Trichlormethiazide Component Of Metatensin

176. A908323

177. Q-201860

178. Q2072745

179. Sr-01000000284-2

180. Sr-01000000284-4

181. Brd-a28940325-001-05-9

182. Brd-a28940325-001-15-8

183. 6-chloro-3-(dichloromethyl)3,2,4-benzothiadiazine-1,1-dioxide

184. Trichlormethiazide, United States Pharmacopeia (usp) Reference Standard

185. 3-(dichloromethyl)-6-chloro-7-sulfamoyl-3,2,4-benzothiadiazine 1,1-dioxide

186. 3-(dichloromethyl)-6-chloro-7-sulfamoyl-3,2,4-benzothiadiazine-1,1-dioxide

187. 6-chloro-3-(dichloromethyl)-3,2,4-benzothiadiazine-7-sulfonamide1,1-dioxide

188. 6-chloro-3-(dichloromethyl)-3,4-dihydro-2h-1,2,4-benzothiadiazine-7-sulfonamid

189. 6-chloro-3-(dichloromethyl)-3,4-dihydro-2h-1,2,4-thiadiazine-7-sulfonamide 1,1-dioxide

190. (+/-)-6-chloro-3-(dichloromethyl)-3,4-dihydro-2h-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide

191. 2h-1,2,4-benzothiadiazine-7-sulfonamide, 6-chloro-3-(dichloromethyl)-3,4-dihydro-, 1,1-dioxide, (+/-)-

192. 2h-1,4-benzothiadiazine-7-sulfonamide, 6-chloro-3-(dichloromethyl)-3,4-dihydro-, 1,1-dioxide

193. 6-chloro-3-(dichloromethyl)-1,1-dioxo-3,4-dihydro-2h-1??,2,4-benzothiadiazine-7-sulfonamide

2.4 Create Date
2005-03-25
3 Chemical and Physical Properties
Molecular Weight 380.7 g/mol
Molecular Formula C8H8Cl3N3O4S2
XLogP30.6
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count7
Rotatable Bond Count2
Exact Mass378.902181 g/mol
Monoisotopic Mass378.902181 g/mol
Topological Polar Surface Area135 Ų
Heavy Atom Count20
Formal Charge0
Complexity571
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count1
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
Covalently Bonded Unit Count1
4 Drug and Medication Information
4.1 Therapeutic Uses

Antihypertensive Agents; Diuretics, Thiazide

National Library of Medicine's Medical Subject Headings online file (MeSH, 1999)


ORALLY EFFECTIVE & LONG-ACTING DIURETIC & ANTIHYPERTENSIVE OF THIAZIDE CLASS. ... ON MG BASIS, IT IS APPROX 250 TIMES MORE ACTIVE THAN CHLOROTHIAZIDE.

Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 871


THIAZIDE DRUGS...USUALLY FIRST DRUG TO BE EMPLOYED IN TREATMENT OF HYPERTENSION. SINCE THIAZIDES INDUCE ONLY LIMITED (10%) REDN IN BLOOD PRESSURE THEY ARE USEFUL EITHER IN MILD CASES OF HYPERTENSION OR AS ADJUNCTIVE THERAPY TO OTHER DRUGS. /THIAZIDE DIURETICS/

Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 868


THIAZIDE DIURETICS ARE EFFECTIVE AS ADJUNCTIVE THERAPY IN EDEMA ASSOC WITH CONGESTIVE HEART FAILURE, HEPATIC CIRRHOSIS, & CORTICOSTEROID & ESTROGEN THERAPY, AS WELL AS EDEMA DUE TO VARIOUS FORMS OF RENAL DYSFUNCTION...& SEVERE EDEMA DUE TO PREGNANCY. /THIAZIDE DIURETICS/

Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 868


For more Therapeutic Uses (Complete) data for TRICHLORMETHIAZIDE (11 total), please visit the HSDB record page.


4.2 Drug Warning

TRICHLORMETHIAZIDE...COULD BE GIVEN LESS FREQUENTLY /THAN MOST OF THIAZIDES/, SINCE...DURATION OF ACTION LONGER THAN 24 HR.

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 902


PERIODIC SERUM ELECTROLYTE DETERMINATION SHOULD BE DONE ON ALL PATIENTS IN ORDER TO DETECT ELECTROLYTE IMBALANCE SUCH AS HYPONATREMIA, HYPOCHLOREMIC ALKALOSIS, & HYPOKALEMIA. /THIAZIDE DIURETICS/

Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 868


THIAZIDE DIURETICS ARE CONTRAINDICATED IN ANURIA, PATIENTS HYPERSENSITIVE TO THESE & OTHER SULFONAMIDE DRUGS, & IN OTHERWISE HEALTHY PREGNANT WOMEN WITH OR WITHOUT MILD EDEMA. ...SHOULD BE USED WITH CAUTION IN PATIENTS WITH RENAL DISEASE, SINCE THEY MAY PPT AZOTEMIA. /THIAZIDE DIURETICS/

Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 868


PLASMA POTASSIUM CONCN SHOULD BE DETERMINED PERIODICALLY IN PATIENTS WHO RECEIVE THIAZIDE DIURETICS FOR EXTENDED PERIODS. /THIAZIDE DIURETICS/

Goodman, L.S., and A. Gilman. (eds.) The Pharmacological Basis of Therapeutics. 5th ed. New York: Macmillan Publishing Co., Inc., 1975., p. 832


For more Drug Warnings (Complete) data for TRICHLORMETHIAZIDE (11 total), please visit the HSDB record page.


4.3 Minimum/Potential Fatal Human Dose

3. 3= MODERATELY TOXIC: PROBABLE ORAL LETHAL DOSE (HUMAN) 0.5-5 G/KG, BETWEEN 1 OZ & 1 PINT FOR 70 KG PERSON (150 LB). /BENZOTHIADIAZIDE DIURETICS/

Gosselin, R.E., H.C. Hodge, R.P. Smith, and M.N. Gleason. Clinical Toxicology of Commercial Products. 4th ed. Baltimore: Williams and Wilkins, 1976., p. II-239


4.4 Drug Indication

Used in the treatment of oedema (including that associated with heart failure) and hypertension.


5 Pharmacology and Biochemistry
5.1 Pharmacology

Trichloromethiazide is indicated as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. Trichloromethiazide has also been found useful in edema due to various forms of renal dysfunction such as nephrotic syndrome, acute glomer-ulonephritis, and chronic renal failure. Trichloromethiazide 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. Like other thiazides, Trichloromethiazide promotes water loss from the body (diuretics). They inhibit Na+/Cl- reabsorption from the distal convoluted tubules in the kidneys. Thiazides also cause loss of potassium and an increase in serum uric acid. Thiazides are often used to treat hypertension, but their hypotensive effects are not necessarily due to their diuretic activity. Thiazides have been shown to prevent hypertension-related morbidity and mortality although the mechanism is not fully understood. Thiazides cause vasodilation by activating calcium-activated potassium channels (large conductance) in vascular smooth muscles and inhibiting various carbonic anhydrases in vascular tissue.


5.2 MeSH Pharmacological Classification

Diuretics

Agents that promote the excretion of urine through their effects on kidney function. (See all compounds classified as Diuretics.)


Antihypertensive Agents

Drugs used in the treatment of acute or chronic vascular HYPERTENSION regardless of pharmacological mechanism. Among the antihypertensive agents are DIURETICS; (especially DIURETICS, THIAZIDE); ADRENERGIC BETA-ANTAGONISTS; ADRENERGIC ALPHA-ANTAGONISTS; ANGIOTENSIN-CONVERTING ENZYME INHIBITORS; CALCIUM CHANNEL BLOCKERS; GANGLIONIC BLOCKERS; and VASODILATOR AGENTS. (See all compounds classified as Antihypertensive Agents.)


Sodium Chloride Symporter Inhibitors

Agents that inhibit SODIUM CHLORIDE SYMPORTERS. They act as DIURETICS. Excess use is associated with HYPOKALEMIA. (See all compounds classified as Sodium Chloride Symporter Inhibitors.)


5.3 ATC Code

C - Cardiovascular system

C03 - Diuretics

C03A - Low-ceiling diuretics, thiazides

C03AA - Thiazides, plain

C03AA06 - Trichlormethiazide


5.4 Absorption, Distribution and Excretion

Trichlormethiazide is absorbed from the GI tract. Little information is available on the extent of absorption and the fate of trichlormethiazide in the body, although it is believed to be excreted principally as unchanged drug in urine.

McEvoy, G.K. (ed.). American Hospital Formulary Service-Drug Information 19 98. Bethesda, MD: American Society of Health-System Pharmacists, Inc. 1998 (Plus Supplements)., p. 2178


MOST CMPD ARE RAPIDLY EXCRETED WITHIN 3-6 HR. /THIAZIDE DIURETICS/

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 902


DIURESIS OCCURS WITHIN 2 HR, REACHES PEAK IN 6 HR, & LASTS MORE THAN 24 HR.

Osol, A. and J.E. Hoover, et al. (eds.). Remington's Pharmaceutical Sciences. 15th ed. Easton, Pennsylvania: Mack Publishing Co., 1975., p. 871


THIAZIDES ARE ABSORBED FROM GI TRACT & OWE THEIR USEFULNESS LARGELY TO THEIR EFFECTIVENESS BY ORAL ROUTE. ABSORPTION IS RELATIVELY RAPID. MOST AGENTS SHOW DEMONSTRABLE DIURETIC EFFECT WITHIN HR AFTER ORAL ADMIN. /THIAZIDE DIURETICS/

Goodman, L.S., and A. Gilman. (eds.) The Pharmacological Basis of Therapeutics. 5th ed. New York: Macmillan Publishing Co., Inc., 1975., p. 831


IN GENERAL, THIAZIDES WITH RELATIVELY LONG DURATIONS OF ACTION SHOW PROPORTIONATELY HIGH DEGREE OF BINDING TO PLASMA PROTEINS & ARE REABSORBED... BY RENAL TUBULES. ... DRUG PASSES READILY THROUGH PLACENTAL BARRIER TO FETUS. ALL THIAZIDES PROBABLY UNDERGO ACTIVE SECRETION IN PROXIMAL TUBULE. /THIAZIDE DIURETICS/

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 902


5.5 Biological Half-Life

Half-life is 2-7 hr. /From table/

Hardman, J.G., L.E. Limbird, P.B. Molinoff, R.W. Ruddon, A.G. Goodman (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 9th ed. New York, NY: McGraw-Hill, 1996., p. 703


5.6 Mechanism of Action

Trichlormethiazide seemingly appears to inhibit the active reabsorption of chloride in the ascending loop of Henle. Additionally, it may also do the same for sodium. These actions subsequently alter electrolyte transfer in the proximal tubule. This results in excretion of sodium, chloride, and water and, hence, diuresis. As a diuretic, Trichloromethiazide 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 Trichloromethiazide 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 Trichloromethiazide 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.


...BENZOTHIADIAZIDES HAVE DIRECT EFFECT ON RENAL TUBULAR TRANSPORT OF SODIUM & CHLORIDE...INDEPENDENT OF ANY EFFECT ON CARBONIC ANHYDRASE. /THIAZIDE DIURETICS/

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 899


THIAZIDES INHIBIT REABSORPTION OF SODIUM &...CHLORIDE IN DISTAL SEGMENT. ... AS CLASS...HAVE IMPORTANT ACTION ON EXCRETION OF POTASSIUM THAT RESULTS FROM INCR SECRETION OF CATION BY DISTAL TUBULE. ... GLOMERULAR FILTRATION RATE MAY BE REDUCED BY THIAZIDES, PARTICULARLY WITH IV ADMIN FOR EXPTL PURPOSES. /THIAZIDE DIURETICS/

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 901


...MAY DECR EXCRETION OF URIC ACID IN MAN, THUS INCR ITS CONCN IN PLASMA. HYPERURICEMIC EFFECT RESULTS PRIMARILY FROM INHIBITION OF TUBULAR SECRETION OF URATE. ... UNLIKE MOST OTHER NATRIURETIC AGENTS...DECR RENAL EXCRETION OF CALCIUM RELATIVE TO THAT OF SODIUM... /ENHANCE/ EXCRETION OF MAGNESIUM... /THIAZIDE DIURETICS/

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 901


NATURE OF CHEM INTERACTION BETWEEN THIAZIDES & SPECIFIC RENAL RECEPTORS RESPONSIBLE FOR CHLORURETIC EFFECT IS NOT KNOWN; NO CRITICAL ENZYMATIC REACTIONS HAVE BEEN IDENTIFIED. /THIAZIDE DIURETICS/

Gilman, A. G., L. S. Goodman, and A. Gilman. (eds.). Goodman and Gilman's The Pharmacological Basis of Therapeutics. 6th ed. New York: Macmillan Publishing Co., Inc. 1980., p. 901


For more Mechanism of Action (Complete) data for TRICHLORMETHIAZIDE (11 total), please visit the HSDB record page.