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CAS RN: 24807-55-4 | Product Number: N0477

3-Nitro-1,2,4-triazole [Coupling Agent]


Purity: >98.0%(T)(HPLC)
Synonyms:
Documents:
1G
£27.00
1   4  
5G
£85.00
1   ≥40 

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Product Number N0477
Purity / Analysis Method >98.0%(T)(HPLC)
Molecular Formula / Molecular Weight C__2H__2N__4O__2 = 114.06 
Physical State (20 deg.C) Solid
Storage Temperature Refrigerated (0-10°C)
Condition to Avoid Heat Sensitive
CAS RN 24807-55-4
Reaxys Registry Number 607167
PubChem Substance ID 87573806
SDBS (AIST Spectral DB) 23862
MDL Number

MFCD00009749

Specifications
Appearance White to Light yellow powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(Neutralization titration) min. 98.0 %
Properties (reference)
Melting Point 214 °C
GHS
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
EC Number 246-468-1
Transport Information:
HS Number 2933998090
Application
A Condensing Agent

Experimental procedure: to a solution of N-Boc-Val-OH (160 mg, 0.74 mmol) and Et3N (140 µ L, 1.0 mmol) in THF is added 1 (395 mg, 0.44 mmol). The mixture is concentrated, coevaporated with pyridine and then with toluene, and redissolved in THF (4 mL). DIPEA (0.38 mL, 2.2 mmol), BOP-Cl (0.28 g, 1.1 mmol), and 3-nitro-1,2,4-triazole (0.13 g, 1.1 mmol) were added successively. The reaction mixture is stirred at rt for 1 h. Chromatography on silica gel with 0.5% Et3N and 20 - 100% EtOAc in hexanes gives 2 (0.39 g, 81% yield).

References


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