API reference
Anhydrous citric acid
- CAS number
- 77-92-9
- Molecular formula
- C6H8O7
- Molecular weight
- 192.12 g/mol

About this molecule
A key intermediate in metabolism. It is an acid compound found in citrus fruits. The salts of citric acid (citrates) can be used as anticoagulants due to their calcium-chelating ability. Citric acid is one of the active ingredients in Phexxi, a non-hormonal contraceptive agent that was approved by the FDA on May 2020. It is also used in combination with magnesium oxide to form magnesium citrate, an osmotic laxative.
Source: DrugBank, via PubChem.
Identifiers
- IUPAC name
- 2-hydroxypropane-1,2,3-tricarboxylic acid
- InChIKey
- KRKNYBCHXYNGOX-UHFFFAOYSA-N
- SMILES
- C(C(=O)O)C(CC(=O)O)(C(=O)O)O
- Other CAS numbers recorded
- 79586-22-4 · 141633-96-7 · 134367-01-4
- PubChem CID
- 311
Also known as
citric acid · 2-hydroxypropane-1,2,3-tricarboxylic acid · Citric acid, anhydrous · Aciletten · Anhydrous citric acid · Citro · Citretten · Citric acid anhydrous
Related entries in the range
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