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1134-47-0

1134-47-0 structure
1134-47-0 structure
  • Name: Baclofen
  • Chemical Name: baclofen
  • CAS Number: 1134-47-0
  • Molecular Formula: C10H12ClNO2
  • Molecular Weight: 213.661
  • Catalog: API Anesthetic Agents Skeletal muscle relaxant
  • Create Date: 2018-07-18 17:20:07
  • Modify Date: 2025-08-21 10:23:06
  • Baclofen is a gamma-amino-butyric acid (GABA) derivative used as a skeletal muscle relaxant.Target: GABA ReceptorBaclofen, a lipophilic analog of gamma-aminobutyric acid, is clinically used to control spasticity. Baclofen pretreatment (3 mg/kg) not only prolonged the time taken for animals to reach a core body temperature of 40 degrees C (P < 0.001), but also reduced the percentage of rats attaining a core body temperature of 40 degrees C [1]. Baclofen overdose may result in coma, apnea, autonomic disturbances, cardiac conduction abnormalities, and seizures. Levels obtained shortly after overdose correlate with length of mechanical ventilation [2].
Name baclofen
Synonyms 4-Amino-3-(4-chlorophenyl)butanoic acid
Lioresa
EINECS 214-486-9
(R,S)-Baclofen
b-(Aminomethyl)-4-chlorobenzenepropanoic Acid
baclon
b-(Aminomethyl)-p-chlorohydrocinnamic Acid
Benzenepropanoic acid, β-(aminomethyl)-4-chloro-
Z1YR DG&1VQ
Kemstro
Clofen
Benzenepropanoic acid, β-(aminomethyl)-4-chloro-(9CI)
Benzenepropanoic acid, β-(aminomethyl)-4-chloro-, (±)-
Baclofen
MFCD00055143
Hydrocinnamic acid, β-(aminomethyl)-p-chloro-
(±)-β-(Aminomethyl)-4-chlorobenzenepropanoic acid
DL-Baclofen
4-Amino-3-(4-chlorophenyl)butyric Acid
(±)-Baclofen
Lioresal
Atrofen
benzenepropanoic acid, b-(aminomethyl)-4-chloro-
Description Baclofen is a gamma-amino-butyric acid (GABA) derivative used as a skeletal muscle relaxant.Target: GABA ReceptorBaclofen, a lipophilic analog of gamma-aminobutyric acid, is clinically used to control spasticity. Baclofen pretreatment (3 mg/kg) not only prolonged the time taken for animals to reach a core body temperature of 40 degrees C (P < 0.001), but also reduced the percentage of rats attaining a core body temperature of 40 degrees C [1]. Baclofen overdose may result in coma, apnea, autonomic disturbances, cardiac conduction abnormalities, and seizures. Levels obtained shortly after overdose correlate with length of mechanical ventilation [2].
Related Catalog
References

[1]. Bexis, S., et al., Baclofen prevents MDMA-induced rise in core body temperature in rats. Drug Alcohol Depend, 2004. 74(1): p. 89-96.

[2]. Perry, H.E., et al., Baclofen overdose: drug experimentation in a group of adolescents. Pediatrics, 1998. 101(6): p. 1045-8.
Density 1.3±0.1 g/cm3
Boiling Point 364.3±32.0 °C at 760 mmHg
Melting Point 208-210°C
Molecular Formula C10H12ClNO2
Molecular Weight 213.661
Flash Point 174.1±25.1 °C
Exact Mass 213.055649
PSA 63.32000
LogP 1.56
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.577
Water Solubility 1 M HCl: 50 mg/mL

CHEMICAL IDENTIFICATION

RTECS NUMBER :
MW5084200
CHEMICAL NAME :
Hydrocinnamic acid, beta-(aminomethyl)-p-chloro-
CAS REGISTRY NUMBER :
1134-47-0
LAST UPDATED :
199709
DATA ITEMS CITED :
15
MOLECULAR FORMULA :
C10-H12-Cl-N-O2
MOLECULAR WEIGHT :
213.68
WISWESSER LINE NOTATION :
Z1YR DG&1VQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
571 ug/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
APHRER Annals of Pharmacotherpy. (Harvey Whitney Books Co., POB 42696, Cincinnati, OH 45242) V. 26- 1992- Volume(issue)/page/year: 27,883,1993
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
3429 mg/kg
TOXIC EFFECTS :
Behavioral - coma Cardiac - pulse rate increase, without fall in BP Lungs, Thorax, or Respiration - respiratory obstruction
REFERENCE :
JTCTDW Journal of Toxicology, Clinical Toxicology. (Marcel Dekker, 270 Madison Ave., New York, NY 10016) V.19- 1982- Volume(issue)/page/year: 32,291,1994
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
18 mg/kg
TOXIC EFFECTS :
Behavioral - coma Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
JTCTDW Journal of Toxicology, Clinical Toxicology. (Marcel Dekker, 270 Madison Ave., New York, NY 10016) V.19- 1982- Volume(issue)/page/year: 22,11,1984
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
14 mg/kg
TOXIC EFFECTS :
Behavioral - muscle weakness Behavioral - coma
REFERENCE :
JTCTDW Journal of Toxicology, Clinical Toxicology. (Marcel Dekker, 270 Madison Ave., New York, NY 10016) V.19- 1982- Volume(issue)/page/year: 20,59,1983
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
4286 ug/kg
TOXIC EFFECTS :
Behavioral - coma Cardiac - pulse rate Vascular - BP lowering not characterized in autonomic section
REFERENCE :
AJEMEN American Journal of Emergency Medicine. (WB Saunders, Philadelphia, PA) V.1- 1983- Volume(issue)/page/year: 4,552,1986
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Parenteral
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
25 ug/kg/2D-I
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - mydriasis (pupillary dilation) Behavioral - coma
REFERENCE :
IJCPB5 International Journal of Clinical Pharmacology, Therapy and Toxicology. (Dustri-Verlag Dr. Karl Feistle, Postfach 49, D-8024 Munich-Deisenhofen, Fed. Rep. Ger.) V.6-10, 1972-74; V.18- 1980- Volume(issue)/page/year: 29,274,1991
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
145 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,576,1982
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
115 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970- Volume(issue)/page/year: 11,181,1980
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
78 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970- Volume(issue)/page/year: 11,181,1980
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
200 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NIIRDN Drugs in Japan (Ethical Drugs). (Yakugyo Jiho Co., Ltd., Tokyo, Japan) Volume(issue)/page/year: 6,576,1982
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
103 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970- Volume(issue)/page/year: 11,181,1980
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
31 mg/kg
TOXIC EFFECTS :
Behavioral - altered sleep time (including change in righting reflex) Behavioral - ataxia Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
YAKUD5 Gekkan Yakuji. Pharmaceuticals Monthly. (Yakugyo Jihosha, Inaoka Bldg., 2-36 Jinbo-cho, Kanda, Chiyoda-ku, Tokyo 101, Japan) V.1- 1959- Volume(issue)/page/year: 21,2069,1979 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1500 mg/kg/30D-I
TOXIC EFFECTS :
Behavioral - altered sleep time (including change in righting reflex) Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
YKYUA6 Yakkyoku. Pharmacy. (Nanzando, 4-1-11, Yushima, Bunkyo-ku, Tokyo, Japan) V.1- 1950- Volume(issue)/page/year: 31,871,1980
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1820 mg/kg/26W-I
TOXIC EFFECTS :
Sense Organs and Special Senses (Eye) - mydriasis (pupillary dilation) Behavioral - muscle weakness Behavioral - ataxia
REFERENCE :
YKYUA6 Yakkyoku. Pharmacy. (Nanzando, 4-1-11, Yushima, Bunkyo-ku, Tokyo, Japan) V.1- 1950- Volume(issue)/page/year: 31,871,1980 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X5585 No. of Facilities: 35 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 497 (estimated) No. of Female Employees: 251 (estimated)
Symbol GHS06 GHS08
GHS06, GHS08
Signal Word Danger
Hazard Statements H301-H315-H317-H319-H334-H335-H360
Precautionary Statements Missing Phrase - N15.00950417-P201-P261-P280-P284-P308 + P313
Personal Protective Equipment Eyeshields;Faceshields;full-face particle respirator type N100 (US);Gloves;respirator cartridge type N100 (US);type P1 (EN143) respirator filter;type P3 (EN 143) respirator cartridges
Hazard Codes T:Toxic;
Risk Phrases R61;R25;R36/37/38;R42/43
Safety Phrases 53-22-36/37/39-45-52-36-26
RIDADR UN 2811 6.1/PG 3
WGK Germany 3
RTECS MW5084200
Packaging Group III
Hazard Class 6.1(b)
HS Code 2922499990
HS Code 2922499990
Summary HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0%
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