Labetalol

Modify Date: 2024-01-05 17:30:37

Labetalol Structure
Labetalol structure
 Common Name Labetalol
CAS Number 36894-69-6 Molecular Weight 328.405
Density 1.2±0.1 g/cm3 Boiling Point 552.7±50.0 °C at 760 mmHg
Molecular Formula C19H24N2O3 Melting Point N/A
MSDS N/A Flash Point 288.1±30.1 °C

 Use of Labetalol


Labetalol (AH5158) is an orally active selective α1- and non-selective β-adrenergic receptors competitive antagonist. Labetalol, an anti-hypertensive agent, can be used for the research of cardiovascular disease, such as hypertension in pregnancy[1][2][3].

 Names

Name labetalol
Synonym More Synonyms

 Labetalol Biological Activity

Description Labetalol (AH5158) is an orally active selective α1- and non-selective β-adrenergic receptors competitive antagonist. Labetalol, an anti-hypertensive agent, can be used for the research of cardiovascular disease, such as hypertension in pregnancy[1][2][3].
Related Catalog
Target

α1-adrenergic receptor

β-adrenoceptor

In Vitro Labetalol exhibits greater affinity for β-adrenergic sites on guinea pig heart and lung membranes (IC50=0.8 and 4.0 μM respectively) [2]. Labetalol has affinity for α-adrenergic binding sites (IC50=15 uM) on rabbit uterine membranes.Labctalol has 19 times greater binding affinity for β binding sites in heart membranca than α binding sites in uterine membranes[2].
In Vivo Labetalol (10 mg/kg; i.h.) passes the blood-brain barrier, reaching a level of 2.1 ug/g tissue in the 10-day-old rat pups brain 90 min after injection[4].Labetalol (5.0 mg/kg; i.p.) attenuates circulating IL-1β and IL-6 in tailshock stress rats[5].
References

[1]. Brogden RN, et al. Labetalol: a review of its pharmacology and therapeutic use in hypertension. Drugs. 1978;15(4):251-270.

[2]. Greenslade FC, et al. Labetalol binding to specific alpha- and beta-adrenergic sites in vitro and its antagonism of adrenergic responses in vivo. J Mol Cell Cardiol. 1979 Aug;11(8):803-11.

[3]. Easterling T, et al. Oral antihypertensive regimens (nifedipine retard, labetalol, and methyldopa) for management of severe hypertension in pregnancy: an open-label, randomised controlled trial. Lancet. 2019 Sep 21;394(10203):1011-1021.

[4]. Erdtsieck-Ernste EB, et al. Changes in adrenoceptors and monoamine metabolism in neonatal and adult rat brain after postnatal exposure to the antihypertensive labetalol. Br J Pharmacol. 1992 Jan;105(1):37-44.

[5]. Johnson JD, et al. Catecholamines mediate stress-induced increases in peripheral and central inflammatory cytokines. Neuroscience. 2005;135(4):1295-307.

 Chemical & Physical Properties

Density 1.2±0.1 g/cm3
Boiling Point 552.7±50.0 °C at 760 mmHg
Molecular Formula C19H24N2O3
Molecular Weight 328.405
Flash Point 288.1±30.1 °C
Exact Mass 328.178680
PSA 95.58000
LogP 2.31
Vapour Pressure 0.0±1.6 mmHg at 25°C
Index of Refraction 1.609
Storage condition 2-8°C

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
CV5375500
CHEMICAL NAME :
Benzamide, 2-hydroxy-5-(1-hydroxy-2-((1-methyl-3-phenylpropyl)am ino)ethyl)-
CAS REGISTRY NUMBER :
36894-69-6
LAST UPDATED :
199612
DATA ITEMS CITED :
7
MOLECULAR FORMULA :
C19-H24-N2-O3
MOLECULAR WEIGHT :
328.45
WISWESSER LINE NOTATION :
ZVR BQ EYQ1MY1&2R

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
8571 mg/kg/D
TOXIC EFFECTS :
Behavioral - changes in psychophysiological tests
REFERENCE :
BMJOAE British Medical Journal. (British Medical Assoc., BMA House, Tavistock Sq., London WC1H 9JR, UK) V.1- 1857- Volume(issue)/page/year: 282,1824,1981
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human
DOSE/DURATION :
240 mg/kg/14D
TOXIC EFFECTS :
Peripheral Nerve and Sensation - paresthesis
REFERENCE :
BMJOAE British Medical Journal. (British Medical Assoc., BMA House, Tavistock Sq., London WC1H 9JR, UK) V.1- 1857- Volume(issue)/page/year: 1,580,1978
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
2 mg/kg
TOXIC EFFECTS :
Skin and Appendages - dermatitis, allergic (after systemic exposure)
REFERENCE :
AIMEAS Annals of Internal Medicine. (American College of Physicians, 4200 Pine St., Philadelphia, PA 19104) V.1- 1927- Volume(issue)/page/year: 104,729,1986
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>2 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
PBPSDY Pharmacological and Biochemical Properties of Drug Substances. (American Pharmaceutical Assoc., 2215 Constitution Ave., NW, Washington, DC 20037) V.1- 1977- Volume(issue)/page/year: 2,229,1979
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>50 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
PBPSDY Pharmacological and Biochemical Properties of Drug Substances. (American Pharmaceutical Assoc., 2215 Constitution Ave., NW, Washington, DC 20037) V.1- 1977- Volume(issue)/page/year: 2,229,1979
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
660 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
USXXAM United States Patent Document. (U.S. Patent Office, Box 9, Washington, DC 20231) Volume(issue)/page/year: #5326774
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
97500 ug/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
USXXAM United States Patent Document. (U.S. Patent Office, Box 9, Washington, DC 20231) Volume(issue)/page/year: #5326774

 Safety Information

Hazard Codes Xi
HS Code 2924299090

 Precursor & DownStream

Precursor  0

DownStream  2

 Customs

HS Code 2924299090
Summary 2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

 Synonyms

2-Hydroxy-5-{1-hydroxy-2-[(4-phenylbutan-2-yl)amino]ethyl}benzamide
2-Hydroxy-5-{1-hydroxy-2-[(4-phenylbutan-2-yl)amino]ethyl}benzamide hydrochloride (1:1)
Amipress
MFCD00242941
Labetalol hydrochloride
benzamide, 2-hydroxy-5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]-, monohydrochloride
Labetalol
Benzamide, 2-hydroxy-5-(1-hydroxy-2-((1-methyl-3-phenylpropyl)amino)ethyl)-
Pressalolo
Trandate
2-Hydroxy-5-{1-hydroxy-2-[(4-phenyl-2-butanyl)amino]ethyl}benzamide
Salicylamide, 5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]-, hydrochloride
Benzamide, 2-hydroxy-5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]-, hydrochloride (1:1)
Benzamide, 2-hydroxy-5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]-
Labrocol
2-hydroxy-5-{1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl}benzamide hydrochloride
2-Hydroxy-5-{1-hydroxy-2-[(4-phenyl-2-butanyl)amino]ethyl}benzamide hydrochloride (1:1)
2-Hydroxy-5-[1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]benzamide hydrochloride
2-Hydroxy-5-(1-hydroxy-2-((4-phenylbutan-2-yl)amino)ethyl)benzamide hydrochloride
2-hydroxy-5-[1-hydroxy-2-(4-phenylbutan-2-ylamino)ethyl]benzamide,hydrochloride
5-[1-Hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl]salicylamide hydrochloride
2-hydroxy-5-{1-hydroxy-2-[(1-méthyl-3-phénylpropyl)amino]éthyl}benzamide chlorhydrate
rac Labetalol
labetolol
Ipolab
UNII:R5H8897N95
2-Hydroxy-5-{1-hydroxy-2-[(1-methyl-3-phenylpropyl)amino]ethyl}benzolcarboxamidhydrochlorid
LABETALOL HCL
EINECS 253-258-3
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Chemsrc provides Labetalol(CAS#:36894-69-6) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Labetalol are included as well.>> amp version: Labetalol

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