... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > organic molecule > dipolar compound > zwitterion > amino acid zwitterion > alpha-amino acid zwitterion > L-alpha-amino acid zwitterion > S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion

... > chemical entity > molecular entity > polyatomic entity > molecule > organic molecule > dipolar compound > zwitterion > amino acid zwitterion > alpha-amino acid zwitterion > L-alpha-amino acid zwitterion > S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > carbon group molecular entity > organic molecular entity > organic molecule > dipolar compound > zwitterion > onium betaine > sulfonium betaine > S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion

... > chemical entity > molecular entity > polyatomic entity > molecule > organic molecule > dipolar compound > zwitterion > onium betaine > sulfonium betaine > S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion

... > chemical entity > molecular entity > main group molecular entity > p-block molecular entity > chalcogen molecular entity > sulfur molecular entity > sulfonium compound > sulfonium betaine > S-adenosyl-S-carboxymethyl-L-homocysteine dizwitterion