word	mesh	match	name	chebi
Cystathionine	mesh:D003540	Cystathionine	cystathionine	chebi:17755
Cysteine	mesh:D003545	Cysteine	cysteine	chebi:15356
glutamyl-cysteine	mesh:D003545	Cysteine	cysteine	chebi:15356
Glycine	mesh:D005998	Glycine	glycine	chebi:15428
Homocysteine	mesh:D006710	Homocysteine	homocysteine	chebi:17230
Methionine	mesh:D008715	NA	NA	NA
S-Adenosylmethionine	mesh:D012436	NA	NA	NA
Serine	mesh:D012694	Serine	L-serine	chebi:17115
Glutamate	mesh:D018698	NA	NA	NA
glutamate	mesh:D018698	NA	NA	NA