ChemicalBook > CAS DataBase List > 5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE
5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE
- Product Name
- 5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE
- CAS No.
- 27187-13-9
- Chemical Name
- 5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE
- Synonyms
- Nsc289808;5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE;1,2,4-TRIAZOLO[4,3-A]PYRIDINE, 5-CHLORO-;5-Chloro-1,2,4-triazolo[4,3-a]pyridine,97%;5-Chloro-[1,2,4]triazolo[4,3-a]pyridine
- CBNumber
- CB32455946
- Molecular Formula
- C6H4ClN3
- Formula Weight
- 153.57
- MOL File
- 27187-13-9.mol
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5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE Property
- Melting point:
- 87-89 °C
- Density
- 1.51±0.1 g/cm3(Predicted)
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- pka
- 1.97±0.50(Predicted)
- form
- Solid
- Appearance
- Brown to reddish brown Solid
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Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
- Precautionary statements
-
P270Do not eat, drink or smoke when using this product.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P330Rinse mouth.
P403Store in a well-ventilated place.
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N-Bromosuccinimide Price
Sigma-Aldrich
- Product number
- SYX00172
- Product name
- 5-Chloro-[1,2,4]triazolo[4,3-a]pyridine
- Purity
- Aldrich
- Packaging
- 1g
- Price
- $475
- Updated
- 2025/07/31
TRC
- Product number
- C384393
- Product name
- 5-Chloro-[1,2,4]triazolo[4,3-A]pyridine
- Packaging
- 100mg
- Price
- $90
- Updated
- 2021/12/16
Apolloscientific
- Product number
- OR909064
- Product name
- 5-chloro-[1,2,4]triazolo[4,3-a]pyridine
- Purity
- 95%
- Packaging
- 250mg
- Price
- $130
- Updated
- 2021/12/16
SynQuest Laboratories
- Product number
- 3H32-5-QE
- Product name
- 5-Chloro-[1,2,4]triazolo[4,3-a]pyridine
- Purity
- 95%
- Packaging
- 1g
- Price
- $480
- Updated
- 2021/12/16
Matrix Scientific
- Product number
- 069856
- Product name
- 5-Chloro-[1,2,4]triazolo[4,3-a]pyridine
- Purity
- 98%
- Packaging
- 1g
- Price
- $492
- Updated
- 2021/12/16
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5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE Chemical Properties,Usage,Production
Synthesis
5193-03-3
122-51-0
27187-13-9
General procedure for the synthesis of 5-chloro-[1,2,4]triazolo[4,3-a]pyridine from 2-chloro-6-hydrazinylpyridine and triethyl orthoformate: 2-chloro-6-hydrazinylpyridine (3.0 g, 20.9 mmol) and triethyl orthoformate (20 mL, 120.2 mmol) were added to a 125 mL round bottom flask. The reaction mixture was heated to reflux for 4 hours, then cooled to room temperature and allowed to stand overnight. The mixture was concentrated to dryness under reduced pressure and trichlorophosphate (50 mL) was added. The mixture was refluxed overnight. Upon completion of the reaction, the reaction solution was quenched in an ice bath and washed with dichloromethane (CH2Cl2). The aqueous phase was adjusted to pH 6 with 1 N sodium hydroxide solution and subsequently extracted with dichloromethane. The organic phases were combined, concentrated under reduced pressure and purified by silica gel column chromatography, eluting sequentially with 100% ethyl acetate (500 mL) and 5% methanol/dichloromethane to afford 5-chloro-[1,2,4]triazolo[4,3-a]pyridine (1.73 g, 11.25 mmol, 53% yield) as a solid.
References
[1] Patent: WO2008/118718, 2008, A2. Location in patent: Page/Page column 119
5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 5-CHLORO-[1,2,4]TRIAZOLO[4,3-A]PYRIDINE manufacturers
ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
- Product
- 1,2,4-Triazolo[4,3-a]pyridine,5-chloro- 27187-13-9
- Price
- US $1.10-9.90/KG
- Min. Order
- 1KG
- Purity
- 99% min
- Supply Ability
- 100kg
- Release date
- 2025-08-18
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