Description

Furo[4,3,2-De][1]Benzopyran, 3,4-Dihydro- CAS NO 133992-43-5 is a specialized heterocyclic organic compound belonging to the fused benzopyran class. This high-purity intermediate is valued for its unique molecular scaffold, which is critical for advanced synthetic chemistry and pharmaceutical research. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for developing novel active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders.
• Agrochemical Research: Used in the development of new pesticides and herbicides, leveraging its fused ring structure for biological activity.
• Material Science Precursor: Acts as a precursor for organic electronic materials and advanced polymers due to its conjugated system.
• Academic & R&D Laboratories: Employed in methodological studies and the exploration of new synthetic pathways in organic chemistry.
• Flavor & Fragrance Industry: Potential use in the synthesis of complex aroma chemicals, given its benzopyran backbone which is common in many natural fragrance compounds.

Basic Information

Item	Detail
Product Name	Furo[4,3,2-De][1]Benzopyran, 3,4-Dihydro-
CAS No.	133992-43-5
Molecular Formula	C11H8O2
Molecular Weight	172.18 g/mol
Synonyms	3,4-Dihydrofuro[4,3,2-de][1]benzopyran; 3,4-Dihydro-2H-furo[4,3,2-de]chromene; Furo[4,3,2-de]chromane; 2H-Furo[4,3,2-de]chromene, 3,4-dihydro-; 3,4-Dihydro-2H-furo[4,3,2-de][1]benzopyran; Light-sensitive benzopyran derivative
EINECS	Contact for details

Quality Control

Our Furo[4,3,2-De][1]Benzopyran, 3,4-Dihydro- is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the high standards required for research and development. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment.

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 heat, open flames, and incompatible materials. Due to its light-sensitive nature, handling under subdued light is recommended for long-term stability.

Specification

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