1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide

Modify Date: 2025-08-25 15:18:52

1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide Structure
1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide structure
 Common Name 1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide
CAS Number 73972-70-0 Molecular Weight 142.11600
Density 1.92g/cm3 Boiling Point N/A
Molecular Formula C4H6N4O2 Melting Point N/A
MSDS N/A Flash Point N/A

 Names

Name 5-oxo-1,4-dihydropyrazole-3-carbohydrazide
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.92g/cm3
Molecular Formula C4H6N4O2
Molecular Weight 142.11600
Exact Mass 142.04900
PSA 96.58000
Index of Refraction 1.789

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UQ8960000
CHEMICAL NAME :
2-Pyrazoline-3-carboxylic acid, 5-oxo-, hydrazide
CAS REGISTRY NUMBER :
73972-70-0
LAST UPDATED :
197901
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C4-H6-N4-O2
MOLECULAR WEIGHT :
142.14
WISWESSER LINE NOTATION :
T5NMV DHJ EVMZ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
180 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#03244

 Synonyms

WLN: T5NMV DHJ EVMZ
2-Pyrazoline-3-carboxylic acid,5-oxo-,hydrazide
5-oxo-4,5-dihydro-1h-pyrazole-3-carbohydrazide
5-Oxo-2-pyrazoline-3-carboxylic acid hydrazide
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Chemsrc provides CAS#:73972-70-0 MSDS, density, melting point, boiling point, structure, etc. Its name is 1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide>> amp version: 1H-Pyrazole-3-carboxylic acid, 4, 5-dihydro-5-oxo-, hydrazide

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