4-Chloropyrido[3,4-d]pyrimidine

Name: 4-Chloropyrido[3,4-d]pyrimidine
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 51752-67-1
Cat. No. CS-D0276
Purity≥98%
MDL No.MFCD09999184

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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+

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4-Chloropyrido[3,4-d]pyrimidine|CS-D0276

Structure of 51752-67-1

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General Information

CAS No. 51752-67-1
Cat. No. CS-D0276
Purity ≥98%
MDL No. MFCD09999184
Storage -20°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₄ClN₃
Molecular Weight 165.58
Synonym(s) 4-chloropyrido[3,4-d]pyrimidine hydrochloride
SMILES ClC1=C2C(C=NC=C2)=NC=N1

Description

4-Chloropyrido[3,4-d]pyrimidine serves as a pivotal heterocyclic scaffold in medicinal chemistry, featuring a chlorine atom at the C4 position that enables direct functionalization. This electron-deficient system integrates readily into kinase inhibitors and antiviral agents, offering high reactivity under standard coupling conditions.

Application

4-Chloropyrido[3,4-d]pyrimidine serves as a versatile building block in medicinal chemistry, enabling efficient construction of kinase inhibitors and other bioactive heterocycles. Its chloro group facilitates nucleophilic substitution reactions with amines, thiols, and arylboron reagents under standard conditions, offering high functional group tolerance and compatibility with common coupling protocols. The scaffold exhibits excellent bench stability and ease of purification, making it well-suited for iterative synthesis and scale-up applications in drug discovery workflows.

Synthesis

Route1
- In-stock
  
  19178-25-7
- ~96%
- In-stock
  
  51752-67-1
References
- Kudos Pharmaceuticals Ltd Patent: US2006/199804 A1, 2006 ; Location in patent: Page/Page column 30 ; US 20060199804 A1
Route2
- In-stock
  
  7579-20-6
- ~%
- In-stock
  
  51752-67-1
References
- INFINITY PHARMACEUTICALS INC.; INTELLIKINE, LLC; CASTRO, Alfredo, C.; EVANS, Catherine, A.; JANARDANANNAIR, Somarajannair; LESCARBEAU, Andre; LIU, Tao; SNYDER, Daniel, A.; TREMBLAY, Martin, R.; REN, Pingda; LIU, Yi; LI, Liansheng; CHAN, Katrina Patent: WO2013/12915 A1, 2013 ; WO 2013/012915 A1
Route3
- In-stock
  
  64188-97-2
- ~%
- In-stock
  
  51752-67-1
References
- INFINITY PHARMACEUTICALS INC.; INTELLIKINE, LLC; CASTRO, Alfredo, C.; EVANS, Catherine, A.; JANARDANANNAIR, Somarajannair; LESCARBEAU, Andre; LIU, Tao; SNYDER, Daniel, A.; TREMBLAY, Martin, R.; REN, Pingda; LIU, Yi; LI, Liansheng; CHAN, Katrina Patent: WO2013/12915 A1, 2013 ; WO 2013/012915 A1

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 1.6782
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyridine compounds

Building Blocks Skeleton Aromatic heterocycle compounds Pyrimidine compounds

Key Words

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4-Chloropyrido[3,4-d]pyrimidine

CAS No. 51752-67-1

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