Overview
4-(Dimethylamino)cinnamaldehyde (DMACA) is an organic compound primarily used as a staining reagent in biochemical and histochemical applications. Its ability to form colored complexes with polyphenols, particularly proanthocyanidins, makes it invaluable in plant biology and food science research. The compound is synthesized through the condensation of 4-(dimethylamino)benzaldehyde with acetaldehyde, resulting in its distinctive yellow to orange crystalline form. DMACA is favored for its high sensitivity and specificity, enabling precise detection of target compounds in complex matrices. Its applications extend to quality control in the food and beverage industry, where it helps assess the polyphenol content in products like wine, tea, and fruits. The reagent’s stability and ease of use further contribute to its widespread adoption in laboratory settings.
Physical and Chemical Properties
DMACA appears as a yellow to orange crystalline powder with a molecular weight of 175.23 g/mol. It has a melting point of approximately 120-122°C and is soluble in organic solvents such as ethanol, methanol, and acetone, though only slightly soluble in water. The compound’s solubility profile is critical for preparing staining solutions in various assays. One of its key chemical properties is its reactivity with polyphenols, forming blue or green complexes that are easily detectable under visible light. This reaction is pH-dependent, often requiring acidic conditions for optimal performance. DMACA’s stability is maintained when stored properly, but exposure to light, heat, or moisture can degrade its effectiveness over time.
Main Applications
DMACA is widely used in biochemical assays to detect and quantify proanthocyanidins and other polyphenols. In plant biology, it helps visualize these compounds in tissues, aiding research on plant defense mechanisms and nutrient metabolism. The food industry employs DMACA to evaluate polyphenol content in beverages like wine and tea, ensuring product quality and consistency. In histochemistry, DMACA serves as a staining agent to identify polyphenol-rich structures in biological samples. Its high sensitivity allows for the detection of even trace amounts, making it a preferred choice for researchers. Additionally, DMACA is used in educational laboratories to demonstrate chemical reactions involving polyphenols, showcasing its versatility across scientific disciplines.
Safety and Storage
DMACA should be handled with care to avoid inhalation, ingestion, or skin contact. Personal protective equipment (PPE), including gloves and safety goggles, is recommended when working with the compound. In case of exposure, rinse affected areas thoroughly with water and seek medical attention if necessary. Proper storage is essential to maintain DMACA’s stability. It should be kept in a tightly sealed container in a cool, dry place, protected from light and moisture. Long-term storage under these conditions ensures the reagent remains effective for its intended applications. Disposal should comply with local regulations for chemical waste to minimize environmental impact.
B2B Procurement Guide
When procuring DMACA, B2B buyers should prioritize suppliers that provide detailed product specifications, including purity (typically ≥98%) and batch-specific Certificates of Analysis (COA). Verifying the reagent’s suitability for specific applications, such as histochemistry or food testing, is crucial to avoid performance issues. Price ranges vary depending on purity and supplier, with costs commonly between $50 and $200 per gram. Bulk purchases may offer cost savings, but buyers should ensure proper storage conditions are maintained during transit and upon receipt. Establishing relationships with reputable suppliers ensures consistent quality and reliable delivery, reducing downtime in laboratory operations.
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