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NIST X-ray Photoelectron Spectroscopy Database (SRD 20), Version 5.0

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COOHCH(NH2)CH2SOSCOOHCH(NH2)CH2
COOHCH(NH2)CH2S*OSCOOHCH(NH2)CH2
L-cystine S-oxide
amine, amino acid/its derivatives, carboxylic acid, nitrogen, organic acid, oxygen, sulfur

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