Description

Pyrido[3,4-D]Pyrimidine (7Ci,8Ci,9Ci) is a high-value nitrogen-containing heterocyclic compound that serves as a critical building block in advanced organic synthesis. Its fused pyrimidine-pyridine core structure makes it an essential scaffold for developing novel pharmaceuticals and agrochemicals. This compound is primarily sought after by research institutions and industrial R&D departments focused on medicinal chemistry, material science, and fine chemical manufacturing. Its precise chemical architecture enables the creation of complex molecules with targeted biological or functional properties.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of kinase inhibitors, anticancer agents, and other biologically active molecules.
• Agrochemical Research: Used as a core structure for developing new herbicides, fungicides, and plant growth regulators.
• Material Science: Serves as a building block for organic electronic materials, such as ligands in coordination polymers or components for OLEDs.
• Academic & Contract Research: Essential reagent for method development and novel synthetic route exploration in university and CRO laboratories.
• Fine Chemical Synthesis: Employed in the multi-step production of complex specialty chemicals and dyes.

Basic Information

Product Name	Pyrido[3,4-D]Pyrimidine (7Ci,8Ci,9Ci)
CAS No.	253-86-1
Molecular Formula	C7H5N3
Molecular Weight	131.14 g/mol
Synonyms	Pyrido[3,4-d]pyrimidine; 1,3,5-Triazanaphthalene; 1,5-Diazanaphthalene; 1,3,5-Triazanaphthalene; Pyrido[3,4-d]pyrimidine base; 253-86-1; NSC 51143; CCRIS 5981
EINECS	205-978-9

Quality Control

Our Pyrido[3,4-D]Pyrimidine is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including HPLC for purity and NMR/IR for structural confirmation. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with every shipment. We support custom synthesis and can tailor specifications to meet specific research or cGMP starting material requirements.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.