Loperamide

Modify Date: 2025-08-21 14:03:10

Loperamide structure	Common Name	Loperamide
	CAS Number	53179-11-6	Molecular Weight	477.04
	Density	1.187g/cm3	Boiling Point	647.2ºC at 760 mmHg
	Molecular Formula	C₂₉H₃₃ClN₂O₂	Melting Point	N/A
	MSDS	N/A	Flash Point	345.2ºC

Use of Loperamide

Loperamide (ADL 2-1294) is a selective μ opioid receptor agonist with Kis of 3, 48 and 1156 nM against μ, δ and κ opioid receptor, respectively. Loperamide can be used as an antidiarrheal agent[1].

Name	loperamide
Synonym	More Synonyms

Description	Loperamide (ADL 2-1294) is a selective μ opioid receptor agonist with Kis of 3, 48 and 1156 nM against μ, δ and κ opioid receptor, respectively. Loperamide can be used as an antidiarrheal agent[1].
Related Catalog	Signaling Pathways >> GPCR/G Protein >> Opioid Receptor Signaling Pathways >> Others >> Others Research Areas >> Inflammation/Immunology Signaling Pathways >> Neuronal Signaling >> Opioid Receptor
Target	Ki: 3 nM (μ opioid receptor), 48 nM (δ opioid receptor), 1156 nM (κ opioid receptor)[1]
References	[1]. DeHaven-Hudkins DL, et al. Loperamide (ADL 2-1294), an opioid antihyperalgesic agent with peripheral selectivity. J Pharmacol Exp Ther. 1999 Apr;289(1):494-502.

Density	1.187g/cm3
Boiling Point	647.2ºC at 760 mmHg
Molecular Formula	C₂₉H₃₃ClN₂O₂
Molecular Weight	477.04
Flash Point	345.2ºC
Exact Mass	476.22300
PSA	43.78000
LogP	5.02590
Index of Refraction	1.6

CHEMICAL IDENTIFICATION

RTECS NUMBER :: TM4959000

CHEMICAL NAME :: 1-Piperidinebutanamide, 4-(4-chlorophenyl)-4-hydroxy-N,N-dimethyl-alpha,alpha -diphenyl-

CAS REGISTRY NUMBER :: 53179-11-6

BEILSTEIN REFERENCE NO. :: 1558273

LAST UPDATED :: 199612

DATA ITEMS CITED :: 8

MOLECULAR FORMULA :: C29-H33-Cl-N2-O2

MOLECULAR WEIGHT :: 477.09

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 :: 98 mg/kg

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

REFERENCE :: DDREDK Drug Development Research. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.1- 1981- Volume(issue)/page/year: 8,279,1986

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 5100 ug/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Nutritional and Gross Metabolic - body temperature increase

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: 3,461,1981

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 105 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Nutritional and Gross Metabolic - body temperature increase

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: 3,461,1981

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 28 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Nutritional and Gross Metabolic - body temperature increase

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: 3,461,1981

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 75 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Nutritional and Gross Metabolic - body temperature increase

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: 3,461,1981

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 40 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Nutritional and Gross Metabolic - body temperature increase

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: 3,461,1981

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 2800 ug/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Nutritional and Gross Metabolic - body temperature increase

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: 3,461,1981

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 42 mg/kg

TOXIC EFFECTS :: Sense Organs and Special Senses (Eye) - ptosis Behavioral - tremor Nutritional and Gross Metabolic - body temperature increase

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: 3,461,1981

Hazard Codes	C,Xi
Risk Phrases	R34:Causes burns. R36/37/38:Irritating to eyes, respiratory system and skin . R41:Risk of serious damage to eyes. R37/38:Irritating to respiratory system and skin . R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
Safety Phrases	S26-S36/37/39-S45-S37/39
RIDADR	UN 2735 8/PG 3
WGK Germany	3
RTECS	FF2200000
HS Code	29252000

4-(4-Chlorophen...

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~77%

Loperamide

CAS#:53179-11-6

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ALPHA,ALPHA-DIP...

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Loperamide

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Precursor 4
CAS#:39512-49-7 4-(4-Chlorophen... CAS#:37743-18-3 3,3-Diphenyltet... CAS#:37742-98-6 4-Bromo-2,2-dip... CAS#:956-89-8 ALPHA,ALPHA-DIP...
DownStream 0

HS Code	29252000

Loperamida

4-(4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl)-N,N-dimethyl-2,2-diphenylbutanamide

Maalox Anti-Diarrheal

[3H]-Loperamide

Ioperamide

Loperacap

4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]-N,N-dimethyl-2,2-diphenylbutanamide

Apo-Loperamide

Kaopectate II

MFCD00600388

Imodium

Loperamidum

EINECS 258-416-5

Nu-Loperamide

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