Are there alternatives to Benzeneacetic acid, α-amino-2-chloro-, methyl ester, (αS)-, (2R,3R)-2,3-dihydroxybutanedioate (1:1) (CAS: 141109-15-1) in synthesis?

There are alternative compounds that can be used as precursors or intermediates in synthesizing similar functionalities. For example, α-amino-2-chlorobenzeneacetic acid methyl ester or other amino acid derivatives can serve as alternatives. Isomeric forms or structurally similar intermediates may also be employed depending on the specific synthesis requirements. It's important to consider the reactivity, solubility, and availability of these alternatives when formulating a synthetic route.