Pyrido[3,4-b]pyrazine

Name: Pyrido[3,4-b]pyrazine
Brand: ChemScene
Availability: InStock
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CAS No. 254-86-4
Cat. No. CS-0059202
Purity≥97%
MDL No.None

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

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Structure of 254-86-4

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General Information

CAS No. 254-86-4
Cat. No. CS-0059202
Purity ≥97%
MDL No. None
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₅N₃
Molecular Weight 131.13
Synonym(s) Pyrido[3,4-b]pyrazine (6CI,7CI,8CI,9CI)
SMILES C12=CN=CC=C1N=CC=N2

Description

Pyrido[3,4-b]pyrazine is a nitrogen-rich heterocyclic scaffold featuring fused pyridine and pyrazine rings, offering enhanced π-conjugation and electron-deficient character. This structural motif enables robust integration into functional materials and bioactive molecules, particularly in pharmaceuticals and organic semiconductors where tunable redox properties and planar geometry are advantageous.

Application

Pyrido[3,4-b]pyrazine serves as a versatile heterocyclic scaffold in medicinal chemistry, enabling the construction of bioactive molecules through established coupling and functionalization protocols. Its planar, electron-deficient structure facilitates efficient transition-metal-catalyzed transformations and exhibits favorable stability for bench-scale synthesis. The core functions as a key building block in the development of kinase inhibitors and other pharmaceutical candidates, offering predictable reactivity and compatibility with common protecting groups.

Synthesis

Route1
- In-stock
  
  54-96-6
- 131543-46-9
- ~97%
- In-stock
  
  254-86-4
References
- CALITOR SCIENCES, LLC; SUNSHINE LAKE PHARMA CO., LTD; XI, Ning; WANG, Ruyong; WANG, Liang Patent: WO2014/89324 A1, 2014 ; Location in patent: Paragraph 0302 ;
Route2
- In-stock
  
  54-96-6
- 517-21-5
- ~%
- In-stock
  
  254-86-4
References
- Koenigs; Bueren; Jung Chemische Berichte, 1936 , vol. 69, p. 2691

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

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Computational Chemistry Data

TPSA 38.67
LogP 1.0248
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazine compounds

Key Words

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Pyrido[3,4-b]pyrazine

CAS No. 254-86-4

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