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HomeProduct name listIndazole

Indazole

Synonym(s):1,2-Benzodiazole;1,2-Benzopyrazole

  • CAS NO.:271-44-3
  • Empirical Formula: C7H6N2
  • Molecular Weight: 118.14
  • MDL number: MFCD00005691
  • EINECS: 205-978-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 14:08:57
Indazole Structural

What is Indazole?

Chemical properties

white to beige needle-like crystalline powder

The Uses of Indazole

1H-Indazole is used in organic synthesis, it can react with butyryl chloride and 1-butyryl-1H-indazole. It is also used in synthesis of several small molecule inhibitors as potential cancer therapeutics.

What are the applications of Application

Indazole is a heterocyclic aromatic compound

Definition

ChEBI: 1H-indazole is an indazole. It is a tautomer of a 2H-indazole.

Synthesis Reference(s)

Journal of the American Chemical Society, 79, p. 5242, 1957 DOI: 10.1021/ja01576a047
Organic Syntheses, Coll. Vol. 3, p. 475, 1955

Purification Methods

Crystallise indazole from water, sublime it in vacuo, then recrystallise it from pet ether (b 60-80o). The picrate crystallises from Et2O with m 136o. [Ainsworth Org Synth Coll Vol IV 536 1963, Beilstein 23 III/IV 1055, 23/6 V 156.]

Properties of Indazole

Melting point: 145-148 °C (lit.)
Boiling point: 270 °C/743 mmHg (lit.)
Density  1.4220 (rough estimate)
refractive index  1.5500 (estimate)
Flash point: 270°C
storage temp.  Inert atmosphere,Room Temperature
pka 14.00±0.10(Predicted)
form  Needle-Like Crystalline Powder
color  White to beige
Water Solubility  SOLUBLE IN HOT WATER
Merck  14,4936
BRN  109676
CAS DataBase Reference 271-44-3(CAS DataBase Reference)
NIST Chemistry Reference 1H-Indazole(271-44-3)
EPA Substance Registry System Indazole (271-44-3)

Safety information for Indazole

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H332:Acute toxicity,inhalation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Indazole

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