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57-37-4

57-37-4 structure
57-37-4 structure

Name Benactyzine Hydrochloride
Synonyms β-Diethylaminoethyl benzilate hydrochloride
Benzilic acid β-diethylaminoethyl ester hydrochloride
MFCD00012624
Benzilic acid, 2- (diethylamino)ethyl ester hydrochloride
EINECS 200-324-4
2-(diethylamino)ethyl 2-hydroxy-2,2-diphenylacetate,hydrochloride
Benzeneacetic acid, α-hydroxy-α-phenyl-, 2-(diethylamino)ethyl ester, hydrochloride (1:1)
2-(Diethylamino)ethyl hydroxy(diphenyl)acetate hydrochloride (1:1)
Benzeneacetic acid, α-hydroxy-α-phenyl-, 2- (diethylamino)ethyl ester, hydrochloride
Description Benactyzine hydrochloride is a butyrylcholinesterase (BChE) inhibitor with a Ki of 0.010 mM.
Related Catalog
Target

Ki: 0.010 mM (BChE)[1]

In Vitro Benactyzine hydrochloride and drofenine are widely used anticholinergic drugs which are also competitive inhibitors of BChE with Ki values of 0.010±0.001 and 0.003±0.000 mM, respectively. Results indicate that the inhibition of BChE by Benactyzine hydrochloride is pure or partial competitive. Pure competitive inhibition can be distinguished from partial competitive inhibition by plotting v vs [Benactyzine] at a fixed [BTCh][1].
In Vivo Benactyzine hydrochloride (1 mg/kg) does not influence the attention response. Benactyzine hydrochloride increases the duration of the exploratory-motor reaction, but slightly diminishes the salivation elicited by acetylcholine. There is no blocking effect of Benactyzine hydrochloride and promazine on the EEG-seizure activity elicited by acetylcholine, and almost no inhibitory effect on emotional reactions. Emotional reactions are blocked by high doses of imipramine and promazine, but not by Benactyzine hydrochloride. The data indicates that imipramine, promazine and Benactyzine hydrochloride influence the autonomic effects of serotonin in different ways. Promazine, and especially Benactyzine hydrochloride, inhibit and shorten the period of salivation elicited by the intra-amygdaloid injection of serotonin[2].
Kinase Assay Butyrylcholinesterase activity is measured spectrophotometrically with spectrophotometer using butyrylthiocholine iodide (BTCh) as substrate. In the kinetic studies, initial velocities are measured at 37°C by using 0.25 mM 5,5’-dithio-bis(2-nitrobenzoic acid) (DTNB) in 5 mM 3-(N-morpholino)propanesulfonic acid (MOPS) buffer, pH 7.5, and appropriate concentrations of Benactyzine hydrochloride and drofenine solutions prepared in water, as a function of BTCh concentration from 0.25 to 5.0 mM BTCh in 0.5 mL final volume of assay mixture (0.5 mL assay mixture contains 1.56 mg purified enzyme). Assays are carried out in duplicate and activities are measured for up to 90 s[1].
Animal Admin Experiments are carried out in 36 cats of both sexes weighing 1.8 to 4 kg in a free-behavior situation. The experiments are carried out in the following order: after the first micro-injection of acetylcholine and/or serotonin and/or noradrenaline (200 μg) into the amygdala the changes in the behavior, autonomic reactions and EEG are recorded for a period of 10 min and then followed by intramuscular injections of imipramine and/or Benactyzine hydrochloride and/or promazine and/or saline (in control experiments). The second micro-injection of neurohormones (200 μg) into the amygdala is performed in 45 rain after the intramuscular injection of drugs and/or saline, and the effect is compared with the previous one, induced by the first micro-injection[2].
References

[1]. Bodur E, et al. Inhibition effects of benactyzine and drofenine on human serum butyrylcholinesterase. Arch Biochem Biophys. 2001 Feb 1;386(1):25-9.

[2]. Allikmets LH, et al. Dissimilar influences of imipramine, benactyzine and promazine on effects of micro-injections ofnoradrenaline, acetylcholine and serotonin into the amygdala in the cat. Psychopharmacologia. 1969;15(5):392-403.

Density 1.115g/cm3
Boiling Point 409.3ºC at 760mmHg
Melting Point 177-179 °C(lit.)
Molecular Formula C20H26ClNO3
Molecular Weight 363.878
Flash Point 201.4ºC
Exact Mass 363.160126
PSA 49.77000
LogP 3.60950

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DD2800000
CHEMICAL NAME :
Benzilic acid, 2-(diethylamino)ethyl ester, hydrochloride
CAS REGISTRY NUMBER :
57-37-4
LAST UPDATED :
199706
DATA ITEMS CITED :
13
MOLECULAR FORMULA :
C20-H25-N-O3.Cl-H
MOLECULAR WEIGHT :
363.92
WISWESSER LINE NOTATION :
QXR&R&VO2N2&2 &GH

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human
DOSE/DURATION :
14 ug/kg
TOXIC EFFECTS :
Behavioral - toxic psychosis
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,363,1972
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
184 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 1,42,1959
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - mydriasis (pupillary dilation) Behavioral - excitement Lungs, Thorax, or Respiration - respiratory stimulation
REFERENCE :
APTOA6 Acta Pharmacologica et Toxicologica. (Copenhagen, Denmark) V.1-59, 1945-86. For publisher information, see PHTOEH Volume(issue)/page/year: 11,405,1955
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
160 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,363,1972
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
76 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams & Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10- Volume(issue)/page/year: 74,274,1942
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,363,1972
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
14300 ug/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,673,1986
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intradermal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
350 mg/kg
TOXIC EFFECTS :
Behavioral - excitement Behavioral - ataxia Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 59,149,1938
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - mydriasis (pupillary dilation) Behavioral - excitement Lungs, Thorax, or Respiration - respiratory stimulation
REFERENCE :
APTOA6 Acta Pharmacologica et Toxicologica. (Copenhagen, Denmark) V.1-59, 1945-86. For publisher information, see PHTOEH Volume(issue)/page/year: 11,405,1955
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
15 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,363,1972
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - guinea pig
DOSE/DURATION :
100 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - mydriasis (pupillary dilation) Behavioral - excitement Lungs, Thorax, or Respiration - respiratory stimulation
REFERENCE :
APTOA6 Acta Pharmacologica et Toxicologica. (Copenhagen, Denmark) V.1-59, 1945-86. For publisher information, see PHTOEH Volume(issue)/page/year: 11,405,1955 ** REPRODUCTIVE DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
500 ug/kg
SEX/DURATION :
male 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Fertility - mating performance (e.g. # sperm positive females per # females mated; # copulations per # estrus cycles)
REFERENCE :
PSYPAG Psychopharmacologia (Berlin). (Berlin, Ger.) V.1-46, 1959-76. For publisher information, see PSCHDL. Volume(issue)/page/year: 10,44,1966
Hazard Codes T:Toxic;
Risk Phrases R23/24/25
Safety Phrases S36/37/39-S45
RIDADR UN 2811 6.1/PG 3
WGK Germany 3
RTECS DD2800000
Packaging Group III
Hazard Class 6.1(b)