Description

Protosappanin E1 is a specialized, high-purity natural product compound derived from the heartwood of *Caesalpinia sappan* L., with the CAS registry number 130233-78-2. This compound is valued for its significant biological activity and serves as a critical reference standard and research material in advanced life science applications. It is primarily sought by pharmaceutical R&D teams, nutraceutical developers, and academic researchers focused on inflammation, oxidative stress, and metabolic pathways.

Application

• As a pharmaceutical reference standard for quality control and method validation in drug development.
• For biological activity research in anti-inflammatory, antioxidant, and neuroprotective studies.
• As a key intermediate or marker compound in the development of herbal medicines and standardized botanical extracts.
• In academic and institutional research investigating the pharmacological mechanisms of natural products.
• For use in in-vitro and in-vivo assay systems to screen for therapeutic potential.
• As a high-purity ingredient in the formulation of advanced nutraceutical and cosmeceutical products.

Basic Information

Product Name	Protosappanin E1
CAS No.	130233-78-2
Molecular Formula	C16H16O5
Molecular Weight	288.29 g/mol
Synonyms	Protosappanin E; Protosappanin E-1; (6aR,11aR)-3,6a,9,10-Tetrahydro-6H-[1,3]dioxolo[4,5-g]furo[3,2-c]isochromen-11(11aH)-one; Sappanin E1; Caesalpinia sappan lignan E1
EINECS	Contact for details

Quality Control

Every batch of Protosappanin E1 is manufactured and analyzed under strict quality management systems to ensure identity, purity, and consistency. Our products undergo rigorous quality testing, including advanced chromatographic and spectroscopic methods, to ensure compliance with research-grade standards. A comprehensive Certificate of Analysis (COA) detailing purity, identification, and impurity profiles is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry, cool, and well-ventilated area. Keep the container sealed to protect this light-sensitive compound from degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.2%
Heavy Metals	≤ 20 ppm
Solubility	Soluble in DMSO, Methanol; Slightly soluble in Water

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