4-ACETYL-2-METHYLPYRIMIDINE

CAS: 67860-38-2 FLAVORING AGENT OR ADJUVANT

4-ACETYL-2-METHYLPYRIMIDINE is a synthetic organic compound used as a flavoring agent with a burnt, meaty aroma used to impart roasted meat nuances in flavor formulations.

What It Is

4-ACETYL-2-METHYLPYRIMIDINE is a defined heterocyclic organic compound belonging to the class of pyrimidine derivatives that has specific use in food flavoring contexts. Its chemical identity is anchored by the CAS number 67860-38-2, which uniquely identifies this compound in chemical registries. It is known by systematic names such as 1-(2-methylpyrimidin-4-yl)ethanone, and it may appear under additional synonyms in technical specifications. This substance functions within food systems primarily as a flavoring agent or adjuvant, meaning it contributes specific sensory notes rather than acting as a nutritive component or preservative. The compound is recognized for its distinctive sensory profile that closely resembles burnt or roasted meat aromas, which can be desirable in tailored flavor formulations. 4-ACETYL-2-METHYLPYRIMIDINE is classified scientifically as a substituted pyrimidine ketone. The pyrimidine ring system is a six-membered heterocycle containing two nitrogen atoms, and the acetyl and methyl substituents confer specific chemical properties that influence its odor and flavor characteristics. As a flavoring agent, it is used in very low concentrations compared to major food components. The volume of use is typically determined by desired sensory impact and regulatory or safety assessments currently available from expert committees evaluating flavor ingredients. In addition to its systematic and common names, this ingredient has specific numerical identifiers such as FEMA GRAS reference number 3654 and JECFA number 1565, which are used by expert panels to catalogue and assess its use in food flavoring. These identifiers support traceability in regulatory and safety evaluations, indicating that international scientific bodies have reviewed the compound within their respective frameworks.

How It Is Made

The manufacturing of 4-ACETYL-2-METHYLPYRIMIDINE involves controlled synthetic chemistry techniques typical of heterocyclic compounds used in flavor applications. Industrial production routes are designed to produce a pure compound suitable for use in food flavoring, with processes that avoid contaminants and side products that could compromise safety or sensory characteristics. Conceptually, the synthesis begins with pyrimidine core precursors that are functionalized to introduce the methyl and acetyl groups at defined positions on the ring. Such routes commonly employ organic chemistry reactions such as acylation, oxidation, and condensation to build the structure from simpler starting materials. Because this compound is used for its sensory impact rather than nutritional function, manufacturers place a strong emphasis on purity specifications. Purity is typically assessed using analytical methods such as gas chromatography or high-performance liquid chromatography to ensure that the final product meets defined criteria before formulation into flavor blends. Manufacturers also provide certificates of analysis with each batch, which detail physical properties, compound identity, and purity levels. The synthesis of this substance adheres to good manufacturing practice conventions for flavor ingredients, with quality controls at multiple stages to manage reaction conditions, solvent use, and byproduct removal. While the full production details may vary slightly between suppliers, the underlying principles involve stepwise construction of the pyrimidine derivative structure, followed by isolation and purification. The end result is a concentrated flavoring intermediate that can be incorporated into complex flavor matrices or diluted into carrier liquids for food application.

Why It Is Used In Food

4-ACETYL-2-METHYLPYRIMIDINE is incorporated in food products and flavor formulations because of its specific sensory contribution. Flavor development in food science aims to mimic desirable sensory characteristics found in natural foods or cooking processes, and this compound is particularly effective at evoking roasted, cooked, or burnt meat notes. These sensory nuances are valuable in enhancing the appeal of processed foods that seek to replicate traditional culinary profiles without using natural meat ingredients. The use of such flavoring agents supports product innovation and consumer experience. For example, plant-based or reduced-meat products can benefit from strategic inclusion of flavor compounds that mimic meat-like sensory attributes to improve overall palatability. In complex flavor systems, 4-ACETYL-2-METHYLPYRIMIDINE is combined with other flavoring agents to build layered profiles that recreate depth and richness similar to slow-cooked or roasted foods. Beyond imparting specific taste and aroma notes, the compound’s chemical stability under typical food processing conditions allows formulators to maintain consistent flavor quality. While not a preservative or functional ingredient in the nutritional sense, its targeted use enhances the overall sensory profile, which is a key driver of consumer acceptance in many categories of prepared foods, snacks, seasonings, and savory applications. This technical function differentiates flavoring agents like 4-ACETYL-2-METHYLPYRIMIDINE from other classes of additives that primarily preserve, color, or texturize.

Adi Example Calculation

To illustrate the concept of acceptable daily intake (ADI) in a general sense, consider a hypothetical scenario where a numerical ADI is assigned to a flavoring agent. If an expert committee determined an ADI of X mg per kg of body weight for a compound, a person weighing 70 kg would have an illustrative ADI of X multiplied by 70. For example, if X were 1 mg per kg of body weight, then a 70 kg individual’s daily ADI would be 70 mg. This calculation helps contextualize how regulatory values relate to real-world body weights. For 4-ACETYL-2-METHYLPYRIMIDINE, a specific numeric ADI is not defined because the expert evaluation concluded there is no safety concern at current exposure levels. Nonetheless, the underlying principle of relating intake to body weight remains central to understanding regulatory assessments. If future data supported establishment of a numeric ADI, similar illustrative calculations could help stakeholders and researchers visualize how that number applies to different individuals. Importantly, such calculations are intended for conceptual understanding and are not prescriptive recommendations for individual consumption.

Safety And Health Research

Safety evaluations of flavoring agents like 4-ACETYL-2-METHYLPYRIMIDINE focus on toxicological data, exposure estimates, and comparative assessments relative to known safe levels for similar compounds. Regulatory bodies and expert committees review data from animal studies, metabolism research, and structure-activity analyses to determine whether a compound poses potential risks at typical intake levels. For this compound, the assessment by JECFA concluded that intake at levels associated with its use in food flavoring does not raise safety concerns. This conclusion is based on comprehensive evaluation of available data, including metabolic pathways and potential toxicological endpoints. It is important to differentiate between hazard identification and exposure risk. Toxicology studies may identify potential adverse effects at very high doses that far exceed those encountered through normal food consumption. Safety assessments take into account margins of exposure and use conservative assumptions to ensure that typical use levels remain well below thresholds of concern. The available data for 4-ACETYL-2-METHYLPYRIMIDINE indicate that, when used as a flavoring agent in accordance with standard industry practices, consumers are not expected to be exposed to levels that approach toxicological thresholds identified in laboratory studies. Ongoing research in flavor chemistry and toxicology continues to refine understanding of how flavoring agents behave in biological systems. Researchers monitor new data from structural analogs, metabolic studies, and exposure modeling to support periodic reevaluation of safety conclusions. However, the current regulatory landscape, informed by expert evaluations, supports the continued use of this compound within defined flavoring applications without specific numeric health risk concerns identified at typical intake levels.

Regulatory Status Worldwide

Regulatory oversight for flavoring agents such as 4-ACETYL-2-METHYLPYRIMIDINE varies by region and is grounded in safety assessments conducted by expert bodies. Globally, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) has evaluated this compound as a flavoring agent and determined that it presents no safety concern at current levels of intake when used for that purpose. This evaluation was recorded in the 2005 session of JECFA, which assessed multiple flavoring agents against toxicological and exposure data to determine their safety profiles. The committee’s determination is widely referenced in international regulatory discussions of flavoring compounds and supports their continued use within defined application contexts. (JECFA evaluation year 2005 as indicated in published reports). In the United States, the Flavor and Extract Manufacturers Association (FEMA) Expert Panel has assigned a GRAS reference number to 4-ACETYL-2-METHYLPYRIMIDINE, indicating that expert review within the FEMA framework supports its safety for use as a flavoring ingredient under intended conditions. Although this FEMA GRAS status reflects scientific judgment by qualified experts, it does not by itself constitute a direct approval or listing in the Code of Federal Regulations under specific sections such as 21 CFR Part 172 or Part 184. Instead, it signifies that the compound’s safety profile has been reviewed and documented through industry-established procedures. In the European Union, assessment frameworks such as those used by the European Food Safety Authority (EFSA) consider similar evidence in evaluating flavoring substances. While specific E-number assignment is not documented for this compound, EFSA evaluations referenced by industry sources have indicated that there is no safety concern when used as a flavoring agent, consistent with international expert assessments. National regulations in other regions often reference JECFA or similar scientific opinions when incorporating flavoring agents into food safety frameworks.

Taste And Functional Properties

From a sensory perspective, 4-ACETYL-2-METHYLPYRIMIDINE is characterized by a robust burnt or roasted meat aroma that can significantly influence product flavor at low concentrations. Sensory panels and analytical flavor studies have identified this compound as a contributor to savory and cooked meat-like notes, which makes it a favored component in flavor systems aimed at reproducing those sensory qualities. Its impact is often described in terms of richness, complexity, and authenticity when used judiciously within a broader formulation. In terms of functional properties, the compound exhibits moderate volatility, meaning it contributes to both aroma and taste perception. Its solubility characteristics allow it to disperse effectively in oil-based carriers and to some extent in aqueous systems when used with appropriate solvents or emulsifiers. Unlike basic food ingredients such as sugars or salts, which contribute nutritive value, flavoring agents are used at trace levels, and their functional behavior is judged on sensory impact rather than macronutrient contribution. Chemical stability is important in food processing, and 4-ACETYL-2-METHYLPYRIMIDINE generally maintains its sensory integrity under typical cooking and processing temperatures. Its structure is resilient enough to withstand heating without significant degradation, which supports its use in products that may undergo thermal processing. Additionally, the interaction of this compound with other flavor components can create synergistic effects that enhance overall sensory perception. Flavorists often tailor combinations of compounds to achieve specific profiles, and this ingredient’s distinct notes make it a useful tool within that palette.

Acceptable Daily Intake Explained

In regulatory science, the concept of an acceptable daily intake (ADI) serves as a tool to guide interpretations of safety based on toxicological data and exposure estimates. An ADI represents an estimate of the amount of a substance that can be consumed daily over a lifetime without appreciable health risk, expressed per unit of body weight. For many food additives and flavoring agents, expert committees such as JECFA assign an ADI based on laboratory studies and conservative assumptions that account for variability within populations. For 4-ACETYL-2-METHYLPYRIMIDINE, the Joint FAO/WHO Expert Committee on Food Additives has determined that there is no safety concern at current levels of intake when used as a flavoring agent. This determination effectively indicates that an ADI need not be defined in the traditional numeric sense because typical exposure levels do not approach thresholds associated with toxicity. Instead of assigning a specific mg-per-kg body weight number, the expert panel’s conclusion reflects confidence that, within normal application levels, the compound does not pose appreciable risk. The absence of an explicit numeric ADI does not imply unrestricted use; rather, it reflects the compound’s safety profile relative to expected exposures. It is important for food scientists and regulators to understand that the lack of a numeric ADI in this context is guided by scientific evaluation rather than an absence of analysis. Safety assessments incorporate toxicological data and exposure modeling to ensure that customary use does not raise concerns. When a flavoring agent shows no indication of risk at typical use levels, regulatory frameworks may allow continued use while recommending monitoring and reevaluation if new data emerge.

Comparison With Similar Additives

4-ACETYL-2-METHYLPYRIMIDINE can be compared with other flavoring agents used in savory and cooked-meat flavor profiles to illustrate similarities and differences in sensory contribution and regulatory assessment. Compounds such as 2-acetyl-1-pyrroline and maltol are also used in flavor systems to impart roasted, sweet, or toasted notes. While 2-acetyl-1-pyrroline is often associated with popcorn or baked aroma nuances, 4-ACETYL-2-METHYLPYRIMIDINE specifically evokes roasted or burnt meat nuances that are valuable in savory applications. Maltol, another commonly used flavoring compound, provides sweet, caramel-like notes and is used in a wide range of products. Compared with 4-ACETYL-2-METHYLPYRIMIDINE, maltol’s sensory profile is oriented toward sweet and dessert-like applications rather than meaty, roasted notes. Regulatory assessments for these compounds also vary; maltol has established use profiles supported by toxicological data and numerical ADIs in specific jurisdictions, whereas 4-ACETYL-2-METHYLPYRIMIDINE’s evaluation indicates no safety concern at typical use levels without a defined numeric ADI. These differences underline how flavor chemists choose specific additives to achieve desired sensory outcomes while navigating regulatory frameworks that reflect compound-specific evidence and safety conclusions. In practice, flavorists often blend multiple compounds to achieve complex profiles, and the interplay between ingredients like 4-ACETYL-2-METHYLPYRIMIDINE, 2-acetyl-1-pyrroline, and maltol demonstrates how distinct sensory attributes can be combined. Understanding the nuanced contributions and regulatory assessments of each compound supports informed formulation decisions that balance sensory quality with safety considerations.

Common Food Applications Narrative

In practical food manufacturing, 4-ACETYL-2-METHYLPYRIMIDINE is applied in categories of foods where savory, roasted, or cooked meatlike flavors are prominent. Examples include meat analogues, snack seasonings, prepared sauces, and some processed food items seeking rich sensory appeal. The compound’s role is not as a source of nutrition or preservation but as a targeted flavor enhancer within systems that aim to recreate complex taste experiences. For instance, in savory snack seasonings designed to evoke grilled or roasted meat, this compound can be blended with other flavor ingredients to achieve a balanced profile that resonates with consumer expectations. Similarly, in flavor bases for soups, broths, or bouillon powders, its inclusion helps round out the sensory profile, adding depth and warmth that might otherwise require more costly natural extracts. The sensory application of this compound also extends to plant-based protein products, where replicating traditional meat flavor is a technical challenge. In these systems, nuanced flavor compounds like 4-ACETYL-2-METHYLPYRIMIDINE are part of a broader strategy to deliver a satisfying taste experience that aligns with consumer preferences for bold, cooked flavor notes. By integrating such flavoring agents, manufacturers can create products with sensory complexity that would be difficult to achieve with base ingredients alone.

Safety & Regulations

FDA

  • Notes: Not specifically listed in CFR; FEMA GRAS supports safety but does not constitute direct FDA regulation.

EFSA

  • Notes: EFSA evaluations referenced by industry sources indicate no safety concern but numeric ADI or E-number not documented on public regulatory opinion.

JECFA

  • Year: 2005
  • Adi Display: No safety concern at current levels of intake when used as a flavouring agent

Sources

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