Description

Methyl 6-(3,4-Dimethoxyphenyl)-8-Methyl-4-Oxo-3,4-Dihydro-2H,6H-Pyrimido[2,1-B][1,3]Thiazine-7-Carboxylate is a high-purity, advanced pharmaceutical intermediate with a complex heterocyclic structure. This compound is of significant value for its role as a key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas requiring sophisticated molecular architectures. It is primarily sought by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing new drug candidates and specialty chemicals.

Application

• Pharmaceutical Intermediate: A critical precursor in the research and development of new drug molecules, particularly for central nervous system (CNS) or anti-infective therapies.
• Agrochemical Research: Serves as a core scaffold for synthesizing novel herbicides, fungicides, or insecticides with potentially new modes of action.
• Organic Synthesis Building Block: Used in academic and industrial R&D labs for constructing complex fused heterocyclic systems for material science or catalysis studies.
• Process Chemistry Development: Employed in scaling up synthetic routes for target molecules during process optimization and pilot plant studies.
• Reference Standard: Supplied as a high-purity analytical standard for method development and quality control in analytical laboratories.

Basic Information

Product Name	Methyl 6-(3,4-Dimethoxyphenyl)-8-Methyl-4-Oxo-3,4-Dihydro-2H,6H-Pyrimido[2,1-B][1,3]Thiazine-7-Carboxylate
CAS No.	300770-17-6
Molecular Formula	C₁₉H₂₀N₂O₅S
Molecular Weight	388.44 g/mol
Synonyms	Methyl 6-(3,4-dimethoxyphenyl)-8-methyl-4-oxo-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazine-7-carboxylate; 7-Carbomethoxy-6-(3,4-dimethoxyphenyl)-8-methyl-3,4-dihydro-2H,6H-pyrimido[2,1-b][1,3]thiazin-4-one; 300770-17-6; Pyrimidothiazine carboxylate derivative; CAS 300770-17-6
EINECS	Contact for details

Quality Control

Our Methyl 6-(3,4-Dimethoxyphenyl)-8-Methyl-4-Oxo-3,4-Dihydro-2H,6H-Pyrimido[2,1-B][1,3]Thiazine-7-Carboxylate is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via NMR and mass spectrometry, to ensure it meets the stringent requirements for pharmaceutical R&D. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 15-25°C). The compound may be light-sensitive and should be handled under appropriate conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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