| 1 | 2021224-02-0 | 西地那非杂质25 | Sildenafil Impurity 25 | C9H10O6S
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| 2 | 94134-07-3 | 舒必利杂质02 | methyl 5-sulpho-o-anisate | C9H10O6S
| 214-舒必利 | |
| 3 | 86321-32-6 | 3-(3-磺基氧基苯基)丙酸 | 3-(3-sulfooxyphenyl)propanoic acid | C9H10O6S
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| 4 | 32499-37-9 | Benzoic acid, 5-(ethoxysulfonyl)-2-hydroxy- | Benzoic acid, 5-(ethoxysulfonyl)-2-hydroxy- | C9H10O6S
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| 5 | 67258-10-0 | 3-Methoxy-4-[(methylsulfonyl)oxy]benzoic acid | 3-Methoxy-4-[(methylsulfonyl)oxy]benzoic acid | C9H10O6S
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| 6 | 83957-15-7 | Benzoic acid, 2-hydroxy-5-(methoxysulfonyl)-, methyl ester | Benzoic acid, 2-hydroxy-5-(methoxysulfonyl)-, methyl ester | C9H10O6S
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