What is L-tyrosine Ethyl Ester Hydrochloride?
L-tyrosine Ethyl Ester Hydrochloride (CAS Number: 4089-07-0) is a synthetic derivative of L-tyrosine, a naturally occurring amino acid. This compound consists of the L-tyrosine amino acid with an ethyl ester modification and a hydrochloride salt form. The chemical modification alters the structure of the parent amino acid, creating a compound with distinct biochemical properties.
L-tyrosine itself is a naturally occurring, non-essential amino acid found in protein-containing foods and is a precursor to important neurotransmitters and hormones. However, the esterified hydrochloride form represents a chemically modified version with different characteristics and potential applications.
Common Uses
The specific function of L-tyrosine Ethyl Ester Hydrochloride in food applications remains undocumented. Unlike many food additives that serve clear purposes such as preservation, coloring, thickening, or flavoring, this compound's intended use in food manufacturing is not established in publicly available literature or regulatory databases.
This additive may have been investigated for pharmaceutical or nutritional supplement applications rather than conventional food use. The lack of defined function suggests either limited commercial application or that this compound has not achieved widespread adoption in the food industry.
Safety Assessment
No adverse events related to L-tyrosine Ethyl Ester Hydrochloride have been reported to the FDA, and no food recalls associated with this ingredient have been documented. This absence of reported safety incidents does not necessarily indicate safety, but rather reflects the compound's limited use and exposure.
The parent compound, L-tyrosine, has a long history of safe use in food and is generally recognized as safe when consumed in normal dietary amounts. However, chemical modifications such as esterification can alter bioavailability, metabolism, and safety profiles. Each modified form requires independent safety evaluation.
No published human studies or toxicology data appear to be publicly available for this specific compound. Animal studies, if conducted, would typically inform regulatory decisions but are not accessible in standard food safety databases.
Regulatory Status
L-tyrosine Ethyl Ester Hydrochloride has not been approved as a GRAS (Generally Recognized as Safe) substance by the U.S. Food and Drug Administration. This status indicates that the compound does not meet the criteria for self-affirmation as safe, which typically requires either a long history of safe use in food or substantial scientific evidence of safety.
The ingredient is not listed in the FDA's Approved Additives and Ingredients Database, and there is no documented food additive petition for this compound. Its legal status for food use in other regulatory jurisdictions, including the European Food Safety Authority (EFSA), is unclear.
Manufacturers seeking to use this ingredient in food products would typically need to submit a Food Additive Petition to the FDA or comply with relevant regulations in their respective countries.
Key Studies
Publicly available peer-reviewed research on L-tyrosine Ethyl Ester Hydrochloride in food applications appears to be absent. While L-tyrosine and its various derivatives have been studied in pharmaceutical and supplement contexts, this specific esterified form does not appear in major scientific databases.
The lack of published studies reflects the compound's unknown status and limited commercial history in food manufacturing. Any safety determination would require submission of toxicological data by manufacturers or regulatory bodies pursuing approval.