Description

1H-Pyrimido[5,4-B][1,4]Oxazine (9Ci) CAS NO 42736-80-1 is a specialized heterocyclic organic compound belonging to the fused pyrimidine-oxazine class. This high-purity intermediate is valued for its unique molecular scaffold, which is critical for advanced research and development in medicinal chemistry. It is primarily sought by pharmaceutical R&D laboratories and fine chemical manufacturers engaged in the synthesis of novel active pharmaceutical ingredients (APIs) and other high-value specialty chemicals.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the research and synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Medicinal Chemistry Research: Used as a core scaffold for structure-activity relationship (SAR) studies and library synthesis in drug discovery programs.
• Organic Synthesis Reagent: Employed in academic and industrial research for constructing complex heterocyclic systems due to its reactive fused-ring structure.
• Agrochemical Development: Potential intermediate in the research phase for developing new crop protection agents and pesticides.
• Material Science Research: Investigated as a precursor for organic electronic materials or specialty polymers requiring specific heteroatom configurations.

Basic Information

Product Name	1H-Pyrimido[5,4-B][1,4]Oxazine (9Ci)
CAS No.	42736-80-1
Molecular Formula	C6H5N3O
Molecular Weight	135.12 g/mol
Synonyms	1H-Pyrimido[5,4-b][1,4]oxazine; Pyrimido[5,4-b][1,4]oxazine, 1H-; 1H-Pyrimido(5,4-b)(1,4)oxazine; 42736-80-1; 1H-Pyrimido[5,4-b]-1,4-oxazine; 1,4-Oxazine, 1H-pyrimido[5,4-b]-; SCHEMBL2180401; ZINC000003799737
EINECS	Contact for details

Quality Control

Our 1H-Pyrimido[5,4-B][1,4]Oxazine (9Ci) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity, suitable for demanding research applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We adhere to cGMP guidelines where applicable to support our clients' regulatory and quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from incompatible materials. For long-term storage, consider storing under an inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.