B-HT 920

Modify Date: 2025-08-24 10:38:19

B-HT 920 Structure
B-HT 920 structure
 Common Name B-HT 920
CAS Number 36085-73-1 Molecular Weight 282.233
Density N/A Boiling Point 364.6ºC at 760mmHg
Molecular Formula C10H17Cl2N3S Melting Point 245ºC dec.
MSDS Chinese USA Flash Point 174.3ºC
Symbol GHS07
GHS07		 Signal Word Warning

 Use of B-HT 920


B-HT 920(Talipexole 2Hcl) is a dopamine D2 receptor agonist, α2-adrenoceptor agonist and 5-HT3 receptor antagonist, which displays antiParkinsonian activity.IC50 Value: 25 nM(Adrenergic receptor α-2, rat)Target: Adrenergic Receptor; 5-HT Receptor; Dopamine Receptorin vitro: N/Ain vivo: Intravenous injection of 30 micrograms/kg of B-HT 920 into cats lead initially to an increase in blood pressure and then to a long-lasting decrease in blood pressure and heart rate. Vagally mediated reflex bradycardia elicited by angiotensin injection in beta-adrenoceptor-blocked dogs was facilitated by intracisternal injection of 10 micrograms/kg B-HT 920.

 Names

Name 6-prop-2-enyl-4,5,7,8-tetrahydro-[1,3]thiazolo[4,5-d]azepin-2-amine,dihydrochloride
Synonym More Synonyms

 B-HT 920 Biological Activity

Description B-HT 920(Talipexole 2Hcl) is a dopamine D2 receptor agonist, α2-adrenoceptor agonist and 5-HT3 receptor antagonist, which displays antiParkinsonian activity.IC50 Value: 25 nM(Adrenergic receptor α-2, rat)Target: Adrenergic Receptor; 5-HT Receptor; Dopamine Receptorin vitro: N/Ain vivo: Intravenous injection of 30 micrograms/kg of B-HT 920 into cats lead initially to an increase in blood pressure and then to a long-lasting decrease in blood pressure and heart rate. Vagally mediated reflex bradycardia elicited by angiotensin injection in beta-adrenoceptor-blocked dogs was facilitated by intracisternal injection of 10 micrograms/kg B-HT 920.
Related Catalog
References

[1]. Ricci and Taira Adrenoceptor involvement in the cardiovascular responses to B-HT 920 in sinoaortic denervated rats. Gen.Pharmacol. (1999)32 29.

[2]. Eur J Pharmacol. 1997 May 1;325(2-3):137-44.

[3]. Kohno Y, Fukuzaki K, Kitahara K, Koja T.Anti-tremor activity of talipexole produced by selective dopamine D2 receptor stimulation in cynomolgus monkeys with unilateral lesions in the ventromedial tegmentum.Eur J Pharmacol. 1997 Jan 29;319(2-3):197-205.

[4]. Momiyama T, Sasa M, Takaori S.Inhibition by talipexole, a thiazolo-azepine derivative, of dopaminergic neurons in the ventral tegmental area.Life Sci. 1991;49(7):535-43.

[5]. Nishikawa T, Yamada S, Tsuda A, Tanaka M, Koga I, Uchida Y.Chronic treatment with talipexole dihydrochloride on abnormal involuntary movement in humans.Clin Neuropharmacol. 1990 Jun;13(3):259-63.

[6]. Robertson, G.S., et al., In vivo comparisons of the effects of quinpirole and the putative presynaptic dopaminergic agonists B-HT 920 and SND 919 on striatal dopamine and acetylcholine release. J Pharmacol Exp Ther, 1993. 264(3): p. 1344-51.

 Chemical & Physical Properties

Boiling Point 364.6ºC at 760mmHg
Melting Point 245ºC dec.
Molecular Formula C10H17Cl2N3S
Molecular Weight 282.233
Flash Point 174.3ºC
Exact Mass 281.052032
PSA 70.39000
LogP 3.43500

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
XJ7050340
CHEMICAL NAME :
4H-Thiazolo(4,5-d)azepin-2-amine, 5,6,7,8-tetrahydro-6-(2-propenyl)-, dihydrochloride
CAS REGISTRY NUMBER :
36085-73-1
LAST UPDATED :
199712
DATA ITEMS CITED :
10
MOLECULAR FORMULA :
C10-H15-N3-S.2Cl-H
MOLECULAR WEIGHT :
282.26

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 :
403 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - chromodacryorrhea Sense Organs and Special Senses (Eye) - effect, not otherwise specified Behavioral - tremor
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,383,1993
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
66 mg/kg
TOXIC EFFECTS :
Behavioral - altered sleep time (including change in righting reflex) Behavioral - convulsions or effect on seizure threshold Lungs, Thorax, or Respiration - respiratory stimulation
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,383,1993
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
455 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
GWXXBX German Offenlegungsschrift Patent Document. (U.S. Patent and Trademark Office, Foreign Patents, Washington, DC 20231) Volume(issue)/page/year: #2820808
TYPE OF TEST :
LD - Lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Primate - monkey
DOSE/DURATION :
>32 mg/kg
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - ptosis Behavioral - somnolence (general depressed activity) Behavioral - coma
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,401,1993 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
91 mg/kg/13W-I
TOXIC EFFECTS :
Endocrine - changes in adrenal weight Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Reproductive - Effects on Newborn - stillbirth
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,383,1993
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
364 mg/kg/52W-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - changes in lung weight Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Related to Chronic Data - changes in prostate weight
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,383,1993
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Primate - monkey
DOSE/DURATION :
728 mg/kg/52W-I
TOXIC EFFECTS :
Blood - other changes
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 45,545,1993 ** REPRODUCTIVE DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
5600 ug/kg
SEX/DURATION :
female 14 day(s) pre-mating - 21 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,9,1993
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
3300 ug/kg
SEX/DURATION :
female 7-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,9,1993
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
42 mg/kg
SEX/DURATION :
female 15-21 day(s) after conception lactating female 21 day(s) post-birth
TOXIC EFFECTS :
Reproductive - Effects on Newborn - viability index (e.g., # alive at day 4 per # born alive) Reproductive - Effects on Newborn - weaning or lactation index (e.g., # alive at weaning per # alive at day 4) Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)
REFERENCE :
OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 46,9,1993

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Faceshields;Gloves
Hazard Codes Xn: Harmful;
Risk Phrases R22
RIDADR NONH for all modes of transport
WGK Germany 3.0
RTECS XJ7050340
HS Code 2934999090

 Customs

HS Code 2934999090
Summary 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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 Synonyms

B-HT 920 dihydrochloride
4H-Thiazolo[4,5-d]azepin-2-amine, 5,6,7,8-tetrahydro-6-(2-propen-1-yl)-, hydrochloride (1:2)
Talipexoledihydrochloride
Domin
Talipexole
5,6,7,8-Tetrahydro-6-(2-propenyl)-4H-thiazolo[4,5-d]azepine-2-amine dihydrochloride
6-Allyl-5,6,7,8-tetrahydro-4H-[1,3]thiazolo[4,5-d]azepin-2-amine dihydrochloride
B-HT 920
MFCD00274573
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