Muzolimine

Muzolimine
Clinical data

ATC code	C03CD01 (WHO)
Legal status
Legal status	Withdrawn
Identifiers
IUPAC name 5-amino-2-[1-(3,4-dichlorophenyl)ethyl]-4H-pyrazol-3-one
CAS Number	55294-15-0^N
PubChem (CID)	41386
ChemSpider	37766^N
UNII	07Z36289ZX^Y
KEGG	D05093^Y
Chemical and physical data
Formula	C₁₁H₁₁Cl₂N₃O
Molar mass	272.13 g/mol
3D model (Jmol)	Interactive image
SMILES CC(C1=CC(=C(C=C1)Cl)Cl)N2C(=O)CC(=N2)N
InChI InChI=1S/C11H11Cl2N3O/c1-6(16-11(17)5-10(14)15-16)7-2-3-8(12)9(13)4-7/h2-4,6H,5H2,1H3,(H2,14,15)^N Key:RLWRMIYXDPXIEX-UHFFFAOYSA-N^N
^NY (what is this?) (verify)

Muzolimine is a High-ceiling loop diuretic.^[1] It is a pyrazole diuretic which was used for treatment of hypertension but was withdrawn worldwide because of severe neurological side effects.^[2]

Synthesis

Muzolimine synthesis:^[3]

Rxn of (1-(3,4-dichlorophenyl)ethyl)hydrazine (1) with ethyl 3-amino-3-ethoxyacrylate (2) leads to a ring-forming two-site reaction and formation of the pyrazoline diuretic agent, muzolimine (3).

References

↑ Wangemann, P.; Braitsch, R.; Greger, R. (1987). "The diuretic effect of muzolimine". Pflugers Archiv : European journal of physiology. 410 (6): 674–676. PMID 3449804.
↑ Reyes, A. J.; Leary, W. P. (1993). "Clinicopharmacological reappraisal of the potency of diuretics". Cardiovascular Drugs and Therapy. 7: 23–28. doi:10.1007/BF00877955. PMID 8435374.
↑ E. Möller et al., DE 2319278 ; eidem, U.S. Patent 3,957,814 (1974, 1976 both to Bayer); eidem, Experientia 33, 382 (1977).

Antihypertensives: diuretics (C03)

Sulfonamides
(and etacrynic acid)

CA inhibitors (at PT)	Acetazolamide

Loop (Na-K-Cl at AL)	Furosemide^# Bumetanide Etacrynic acid Etozolin Muzolimine Ozolinone Piretanide Tienilic acid Torasemide

Thiazides (Na-Cl at DCT, Calcium-sparing)	Altizide Bendroflumethiazide Chlorothiazide Cyclopenthiazide Cyclothiazide Epitizide Hydrochlorothiazide^# Hydroflumethiazide Mebutizide Methyclothiazide Polythiazide Trichlormethiazide

Thiazide-likes (primarily DCT)	Quinethazone Clopamide Chlortalidone Mefruside Clofenamide Metolazone Meticrane Xipamide Indapamide Clorexolone Fenquizone

Potassium-sparing (at CD)

ESC blockers	Amiloride^# Triamterene Benzamil

Aldosterone antagonists	Spirolactones: Spironolactone^# Eplerenone Potassium canrenoate Canrenone Non-steroidal: Finerenone

Osmotic diuretics (PT, DL)

Vasopressin receptor inhibitors
(DCT and CD)

Other

Ethanol, Isopropanol, 2M2B
mercurial diuretics (Chlormerodrin, Mersalyl, Meralluride)
Theobromine
Cicletanine

^#WHO-EM
^‡Withdrawn from market
Clinical trials:
- ^†Phase III
- ^§Never to phase III

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