4-Chloro-3-methyl-1H-pyrazole

Modify Date: 2025-09-22 18:05:35

4-Chloro-3-methyl-1H-pyrazole Structure
4-Chloro-3-methyl-1H-pyrazole structure
 Common Name 4-Chloro-3-methyl-1H-pyrazole
CAS Number 15878-08-7 Molecular Weight 116.54900
Density 1.306g/cm3 Boiling Point 218.1ºC at 760mmHg
Molecular Formula C4H5ClN2 Melting Point N/A
MSDS N/A Flash Point 106.4ºC

 Names

Name 4-Chloro-3-methyl-1H-pyrazole
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.306g/cm3
Boiling Point 218.1ºC at 760mmHg
Molecular Formula C4H5ClN2
Molecular Weight 116.54900
Flash Point 106.4ºC
Exact Mass 116.01400
PSA 28.68000
LogP 1.37150
Vapour Pressure 0.189mmHg at 25°C
Index of Refraction 1.551

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UQ6456000
CHEMICAL NAME :
Pyrazole, 4-chloro-3-methyl-
CAS REGISTRY NUMBER :
15878-08-7
BEILSTEIN REFERENCE NO. :
0001849
LAST UPDATED :
199612
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C4-H5-Cl-N2
MOLECULAR WEIGHT :
116.56
WISWESSER LINE NOTATION :
T5MNJ C1 EG

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 :
375 mg/kg
TOXIC EFFECTS :
Behavioral - anticonvulsant Behavioral - somnolence (general depressed activity)
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: 121,443,1959

 Synonyms

4-Chloro-5-methyl-1H-pyrazole
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