Methyclothiazide

Modify Date: 2025-08-20 16:03:25

Methyclothiazide structure	Common Name	Methyclothiazide
	CAS Number	135-07-9	Molecular Weight	360.237
	Density	1.6±0.1 g/cm3	Boiling Point	597.9±60.0 °C at 760 mmHg
	Molecular Formula	C₉H₁₁Cl₂N₃O₄S₂	Melting Point	223-225ºC
	MSDS	N/A	Flash Point	315.4±32.9 °C

Use of Methyclothiazide

Methyclothiazide is an orally active antihypertensive agent and a diuretic agent. Methyclothiazide leads to a reduction of the vascular response to the action of endogenous vasoconstricting stimuli, such as Norepinephrine (HY-13715). Methyclothiazide is against voltage-dependent Ca-channel (VDCC) activity in vitro[1][2][3].

Name	6-chloro-3-(chloromethyl)-2-methyl-1,1-dioxo-3,4-dihydro-1λ6,2,4-benzothiadiazine-7-sulfonamide
Synonym	More Synonyms

Description	Methyclothiazide is an orally active antihypertensive agent and a diuretic agent. Methyclothiazide leads to a reduction of the vascular response to the action of endogenous vasoconstricting stimuli, such as Norepinephrine (HY-13715). Methyclothiazide is against voltage-dependent Ca-channel (VDCC) activity in vitro[1][2][3].
Related Catalog	Research Areas >> Cardiovascular Disease Signaling Pathways >> Metabolic Enzyme/Protease >> Carbonic Anhydrase Research Areas >> Metabolic Disease
Target	IC50: voltage-dependent Ca-channel (VDCC)
In Vitro	Methyclothiazide (0-100 μM) induces endothelium-dependent inhibition of the vasoconstrictor responses to NE and AVP only in aortas from SHR, and the maximal vasoconstrictive effect of Norepinephrine (HY-13715) and arginine vasopressin (AVP) is decreased by 59% and 32.3 %, respectively[1]. Methyclothiazide (0-100 μM) induces inhibitory effect on the contractile response to Norepinephrine (HY-13715) is abolished by N-nitro-L-arginine (NOLA) but not indomethacin[1]. Methyclothiazide (100 μM) affects the vascular responses to extracellular Ca2+ under high-K+ depolarizing conditions. It can reduce Ca2+ contracture in a high-K+, Ca2+-free solution. The maximal contracture is reduced by 90.4%[1].
References	[1]. Colas, B., et al., Mechanisms of methyclothiazide-induced inhibition of contractile responses in rat aorta. Eur J Pharmacol, 2000. 408(1): p. 63-7. [2]. Colas, B., et al., Direct vascular actions of methyclothiazide and indapamide in aorta of spontaneously hypertensive rats. Fundam Clin Pharmacol, 2000. 14(4): p. 363-8. [3]. Sasaki, S. and R.D. Bunag, Methyclothiazide attenuates salt-induced hypertension without affecting sympathetic responsiveness in Dahl rats. J Cardiovasc Pharmacol, 1983. 5(3): p. 378-83.

Density	1.6±0.1 g/cm3
Boiling Point	597.9±60.0 °C at 760 mmHg
Melting Point	223-225ºC
Molecular Formula	C₉H₁₁Cl₂N₃O₄S₂
Molecular Weight	360.237
Flash Point	315.4±32.9 °C
Exact Mass	358.956787
PSA	126.33000
LogP	1.76
Vapour Pressure	0.0±1.7 mmHg at 25°C
Index of Refraction	1.606
Storage condition	-20℃

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DK8575000

CHEMICAL NAME :: 2H-1,2,4-Benzothiadiazine-7-sulfonamide, 6-chloro-3-(chloromethyl)-3,4-dihydro-, 1,1-dioxide

CAS REGISTRY NUMBER :: 135-07-9

LAST UPDATED :: 199612

DATA ITEMS CITED :: 8

MOLECULAR FORMULA :: C9-H11-Cl2-N3-O4-S2

MOLECULAR WEIGHT :: 360.25

WISWESSER LINE NOTATION :: T66 BSWN EM DHJ C1 D1G HG ISZW

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >4 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >10 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 870 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 400 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :: Cytogenetic analysis

TEST SYSTEM :: Rodent - hamster Lung

DOSE/DURATION :: 140 mg/L

REFERENCE :: GMCRDC Gann Monograph on Cancer Research. (Plenum Pub. Corp., 233 Spring St., New York, NY 10013) No. 11- 1971- Volume(issue)/page/year: 27,95,1981 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X9137 No. of Facilities: 54 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 859 (estimated) No. of Female Employees: 574 (estimated)

RIDADR	NONH for all modes of transport

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Precursor 3
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DownStream 0

Methycyclothiazide

6-chloro-3-(chloromethyl)-3,4-dihydro-2-methyl-2H-1,2,4-benzothiadiazine-7-sulfonamide-1,1-di-oxide

6-Chloro-3-(chloromethyl)-2-methyl-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide 1,1-dioxide

methyl chlothiazide

EINECS 205-172-2

Enduronum

Enduron

UNII:L3H46UAC61

Aquatensen

Duretic

methylclothiazide

6-chloro-3-(chlorométhyl)-2-méthyl-3,4-dihydro-2H-1,2,4-benzothiadiazine-7-sulfonamide-1,1-dioxyde

2H-1,2,4-Benzothiadiazine-7-sulfonamide, 6-chloro-3-(chloromethyl)-3,4-dihydro-2-methyl-, 1,1-dioxide

methychlothiazide

methyclothiazide

Aquaresen

Naturon

MFCD00242610

Methyclothiazid

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