Alloisoleucine, prepared from a mixture of racemic isoleucine-alloisoleucine diastereoisomers, can be heavily contaminated with isoleucine if the recrystallization of acetyl-dl-alloisoleucine is controlled by melting point only. Two commercial specimens were found to be thus contaminated.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1185514 | PMC |
| http://dx.doi.org/10.1042/bj1160911 | DOI Listing |
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