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Merck

SML0591

Chlorthalidone

≥98% (HPLC)

Synonym(s):

2-Chloro-5(1-hydroxy-3-oxo-1- isoindolinyl) benzenesulfonamide, 2-Chloro-5-(2,3-dihydro-1-hydroxy-3-oxo-1H-isoindol-1-yl)benzenesulfonamide, Chlortalidone

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About This Item

Empirical Formula (Hill Notation):
C14H11ClN2O4S
CAS Number:
Molecular Weight:
338.77
UNSPSC Code:
12352200
EC Number:
201-022-5
NACRES:
NA.77
Assay:
≥98% (HPLC)
Form:
powder
Quality level:
Technical Service
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Quality Level

assay

≥98% (HPLC)

form

powder

color

white to beige

solubility

DMSO: 5 mg/mL, clear (warmed)

storage temp.

2-8°C

SMILES string

[S](=O)(=O)(N)c1c(ccc(c1)C2(NC(=O)c3c2cccc3)O)Cl

InChI

1S/C14H11ClN2O4S/c15-11-6-5-8(7-12(11)22(16,20)21)14(19)10-4-2-1-3-9(10)13(18)17-14/h1-7,19H,(H,17,18)(H2,16,20,21)

InChI key

JIVPVXMEBJLZRO-UHFFFAOYSA-N

Biochem/physiol Actions

Chlorthalidone is a thiazide-like diuretic, an inhibitor of the Na+-Cl- cotransporter.
Chlorthalidone is a thiazide-like diuretic, an inhibitor of the Na+-Cl- cotransporter. Chlorthalidone inhibits sodium ion transport across the renal tubular epithelium increasing the delivery of sodium to the distal renal tubule and indirectly increasing potassium excretion via the sodium-potassium exchange mechanism. Chlorthalidone also promotes Ca++ reabsorption by an unknown mechanism. Several recent comparison studies inidcate that chlorthalidone may be a better drug in preventing cardiovascular events than hydrochlorothiazide.


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Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 2



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Feras Karadsheh et al.
Current hypertension reports, 14(5), 416-420 (2012-08-14)
Thiazide and thiazide-like diuretics have been widely used as blood pressure-lowering agents for more than 5 decades. However, their use in patients with advanced chronic kidney disease has been limited and often discouraged. The exact mechanism of how thiazide and
Michael Proschan et al.
Statistics in medicine, 32(5), 884-897 (2012-09-11)
The debate over whether certain antihypertensive medications have benefits beyond what would be expected from their blood pressure lowering spurred the Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial, which randomized 42,418 participants to chlorthalidone (15,255), amlodipine (9048), lisinopril
Brian C Lund et al.
Journal of clinical hypertension (Greenwich, Conn.), 14(9), 623-629 (2012-09-06)
Indirect evidence suggests that chlorthalidone may be more effective than hydrochlorothiazide (HCTZ), but direct comparisons are lacking. Using national Veterans Administrative pharmacy data from 2003 to 2008, the authors performed a retrospective cohort study examining the effectiveness of chlorthalidone and