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A	B	C	D	E	F
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Y	Z

N-Methyl-D-valine

Z-N-Methyl-D-valine

Boc-N-Methyl-D-Valine

H-β-Alanine tert.butyl ester hydrochloride

Boc-β-Alanine N-hydroxysuccinimide ester

Z-β-Alanine N-hydroxysuccinimide ester

DL-S-Allylcysteine

S-Allyl-L-cysteine

S-Allyl-D-cysteine

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