Description
Specifications Table
Product Name – Methyl arachidate
Quantity/Pack Size – 25 g
Form – White crystalline powder
Grade – ≥99% (HPLC/GC)
Application – Fatty acid methylation, lipid profiling, biochemical standards
Product Overview
Methyl arachidate is a high-purity fatty acid methyl ester (FAME) derived from arachidic acid, featuring a 20-carbon saturated chain with a terminal methyl ester group. This compound is synthesized via esterification, ensuring ≥99% purity as verified by HPLC or GC analysis, making it a reliable reference standard for lipid research. Its crystalline powder form dissolves readily in nonpolar organic solvents like hexane, chloroform, or methanol, enabling seamless integration into chromatographic workflows. The molecular structure (C21H42O2) and precise molecular weight (310.57 g/mol) ensure consistent retention times in GC-MS or LC-MS applications, critical for quantitative fatty acid profiling. The ester’s stability under standard lab conditions (store at 2–8°C in airtight containers) minimizes degradation, while its low volatility reduces sample loss during evaporation steps. As a long-chain FAME, it serves as an internal standard for calibrating instrumentation or validating methylation protocols in lipidomics. The absence of unsaturated bonds eliminates oxidative instability, ensuring reproducible results across experimental batches. Compatible with silica-based columns and most mass spectrometry ionization techniques, methyl arachidate is a versatile tool for metabolomics, food chemistry, and biomarker discovery.
FAQs
1. What is the exact molecular weight and formula of methyl arachidate?
The molecular formula is C21H42O2, with a molecular weight of 310.57 g/mol, corresponding to its saturated 20-carbon chain and methyl ester functional group.
2. Can this compound be used directly in GC-MS without derivatization?
Yes, methyl arachidate is pre-derivatized as a methyl ester, eliminating the need for additional derivatization steps before GC-MS analysis, though dilution in a suitable solvent may be required.
3. What solvents are recommended for dissolving methyl arachidate?
Nonpolar organic solvents like hexane, chloroform, or methanol are ideal for dissolution, with hexane being the most common for chromatographic applications due to its compatibility with GC systems.
4. How does the purity of this product compare to other FAME standards?
This methyl arachidate batch is purified to ≥99% via distillation or recrystallization, exceeding typical commercial FAME standards (often 95–98%), reducing interference in analytical assays.
5. What is the expected shelf life under recommended storage conditions?
When stored at 2–8°C in an airtight, amber glass container to prevent light exposure, the compound remains stable for at least 24 months without significant degradation or oxidation.
