| S(CH2COOH)2 | diacetic acid sulfide |
| NH2(CH2)3COOH | 4-amino-butyric acid |
| N(CH2COOH)3 | nitrilotriacetic acid |
| HSCH2CH(NH2)COOH(HCl).H2O | 1-cysteine hydrochloride hydrate |
| HSC6H4COOH | mercaptobenzoic acid |
| HOOSCH2CH(NH3)COOH | cysteine sulfinic acid |
| HOOCCH2OCH2COOH | 3-oxa-pentanedioic acid |
| HOOCCH(NH2)CH2SSCH2CH(NH2)COOH | 1-cystine |
| HOOCCH(NH2)CH2SSCH2CH(NH2)COOH | cystine-S |
| HOOCCH(NH2)CH2SO3H | cysteic acid |
| HOOC-(Si(CH3)2-O-)n-COOH | carboxylic acid - terminated poly(dimethylsiloxane)/gold |
| HOC(O)CH(NH2)CH2SSCH2CH(NH2)C(O)OH | DL-cystine |
| HO(O)CCH(NH2)CH2S(O)2SCH2CH(NH2)C(O)OH | cystine-S, S-dioxide |
| HO(O)CCH(NH2)CH2S(O)2SCH2CH(NH2)C(O)OH | L-cystine S,S-dioxide |
| HCOOH/MgO | formic acid on magnesium oxide |
| HCOOH/Al | formic acid/aluminum |
| HC(O)OH/O2/Cu | formic acid/oxygen/copper |
| HC(O)OH/O2/Ba/Cu | formic acid/oxygen/barium/copper |
| HC(O)OH/O2/Ba/Ag | formic acid/oxygen/barium/silver |
| HC(O)OH/MgO/Mg | formic acid/magnesium oxide/magnesium |
| H3N(CH2)3COOH(+) | 4-aminobutyric acid(ionic,positive) |
| H2NCH2COOH | amino-acetic acid |
| H2CH2CH(NH2)C(O)OH | L-cysteine |
| H2C2O4 | oxalic acid |
| COOHCH(NH2)CH2SOSCOOHCH(NH2)CH2 | L-cystine S-oxide |