3-Chloro-5-nitro-1H-indazole

Modify Date: 2025-08-25 20:04:21

3-Chloro-5-nitro-1H-indazole Structure
3-Chloro-5-nitro-1H-indazole structure
 Common Name 3-Chloro-5-nitro-1H-indazole
CAS Number 4812-45-7 Molecular Weight 197.579
Density 1.7±0.1 g/cm3 Boiling Point 415.2±25.0 °C at 760 mmHg
Molecular Formula C7H4ClN3O2 Melting Point 218-220ºC
MSDS N/A Flash Point 204.9±23.2 °C

 Names

Name 3-Chloro-5-nitro-1H-indazole
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.7±0.1 g/cm3
Boiling Point 415.2±25.0 °C at 760 mmHg
Melting Point 218-220ºC
Molecular Formula C7H4ClN3O2
Molecular Weight 197.579
Flash Point 204.9±23.2 °C
Exact Mass 196.999207
PSA 74.50000
LogP 2.92
Vapour Pressure 0.0±0.9 mmHg at 25°C
Index of Refraction 1.742

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
NK7899000
CHEMICAL NAME :
Indazole, 3-chloro-5-nitro-
CAS REGISTRY NUMBER :
4812-45-7
BEILSTEIN REFERENCE NO. :
0013635
LAST UPDATED :
199612
DATA ITEMS CITED :
1
MOLECULAR FORMULA :
C7-H4-Cl-N3-O2
MOLECULAR WEIGHT :
197.59

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1550 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
APFRAD Annales Pharmaceutiques Francaises. (SPPIF, B.P.22, F-41353 Vineuil, France) V.1- 1943- Volume(issue)/page/year: 42,379,1984

 Safety Information

Hazard Codes Xi: Irritant;

 Synthetic Route

5-Nitro-1H-indazole structure

5-Nitro-1H-indazole

CAS#:5401-94-5

~91%

3-Chloro-5-nitro-1H-indazole Structure

3-Chloro-5-nitr...

CAS#:4812-45-7

Literature: Souers, Andrew J.; Collins, Christine A.; Gao, Ju; Judd, Andrew S.; Kym, Philip R.; Mulhern, Mathew M.; Sham, Hing L.; Wodka, Dariusz Patent: US2005/277638 A1, 2005 ; Location in patent: Page/Page column 48 ; US 20050277638 A1
N-chlorosuccinimide structure

N-chlorosuccinimide

CAS#:128-09-6

5-Nitro-1H-indazole structure

5-Nitro-1H-indazole

CAS#:5401-94-5

~41%

3-Chloro-5-nitro-1H-indazole Structure

3-Chloro-5-nitr...

CAS#:4812-45-7

Literature: Binch, Hayley; Brenchley, Guy; Golec, Julian M. C.; Knegtel, Ronald; Mortimore, Michael; Patel, Sanjay; Rutherford, Alistair Patent: US2004/9968 A1, 2004 ; US 20040009968 A1
5-Nitro-1,2-dihydro-3H-indazol-3-one structure

5-Nitro-1,2-dih...

CAS#:61346-19-8

Phosphorus trichloride structure

Phosphorus tric...

CAS#:7719-12-2

~%

3-Chloro-5-nitro-1H-indazole Structure

3-Chloro-5-nitr...

CAS#:4812-45-7

Literature: Kenner; Witham Journal of the Chemical Society, 1921 , vol. 119, p. 1057

 Synonyms

3-Chloro-5-nitro-1H-indazole
3-chloro-5-nitro-2H-indazole
MFCD00005692
EINECS 225-380-7
1H-Indazole, 3-chloro-5-nitro-
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