4-Chloro-2-methylpyrimidin-5-amine

Name: 4-Chloro-2-methylpyrimidin-5-amine
Brand: ChemScene
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CAS No. 20090-59-9
Cat. No. CS-0018982
Purity≥97%
MDL No.MFCD13193284

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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-Chloro-2-methylpyrimidin-5-amine|CS-0018982

Structure of 20090-59-9

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General Information

CAS No. 20090-59-9
Cat. No. CS-0018982
Purity ≥97%
MDL No. MFCD13193284
Storage -20°C, sealed storage, away from moisture and light
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₆ClN₃
Molecular Weight 143.57
Synonym(s) 4-Chloro-2-methyl-5-pyrimidinamine; 4-Chloro-2-methylpyrimidin-5-amine; 5-Pyrimidinamine, 4-chloro-2-methyl- (9CI)
SMILES NC1=CN=C(C)N=C1Cl

Description

4-Chloro-2-methylpyrimidin-5-amine is a bench-stable, moisture-tolerant heterocyclic building block featuring a chlorine substituent at C4 and a methyl group at C2. The pyrimidine core bears a primary amine at C5, enabling direct coupling reactions. This configuration facilitates efficient incorporation into pharmaceutical intermediates and agrochemical scaffolds through nucleophilic substitution or metal-catalyzed cross-coupling processes.

Application

4-Chloro-2-methylpyrimidin-5-amine serves as a versatile building block in medicinal chemistry, enabling efficient construction of pyrimidine-based scaffolds. Its chloro group facilitates palladium-catalyzed cross-coupling reactions, while the amino functionality supports derivatization via acylation, sulfonylation, or cyclization. The compound exhibits good bench stability and is compatible with standard purification protocols, making it well-suited for iterative synthesis campaigns in drug discovery.

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

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Computational Chemistry Data

TPSA 51.8
LogP 1.02062
H_Acceptors 3
H_Donors 1
Rotatable_Bonds 0

Other Classifications

Building Blocks Functional Group Chloride

Building Blocks Skeleton Aromatic heterocycle compounds Pyrimidine compounds

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4-Chloro-2-methylpyrimidin-5-amine

CAS No. 20090-59-9

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