| Sinapinic acid | |
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3-(4-hydroxy-3,5-dimethoxyphenyl)prop-2-enoic acid |
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Other names
Sinapinic acid |
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| Identifiers | |
| CAS number | 530-59-6 |
| PubChem | 637775 |
| ChemSpider | 553361 |
| DrugBank | DB08587 |
| ChEBI | CHEBI:15714 |
| ChEMBL | CHEMBL109341 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C11H12O5 |
| Molar mass | 224.21 g/mol |
| Exact mass | 224.068473 u |
| Melting point |
203–205 °C (decomposes) |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Sinapinic acid, or sinapic acid (Sinapine - Origin: L. Sinapi, sinapis, mustard, Gr., cf. F. Sinapine.), is a small naturally occurring hydroxycinnamic acid. It is a member of the phenylpropanoid family. It is a commonly used matrix in MALDI mass spectrometry.[1][2] It is a useful matrix for a wide variety of peptides and proteins. It serves well as a matrix for MALDI due to its ability to absorb laser radiation and to also donate protons (H+) to the analyte of interest.
Sinapic acid can form dimers with itself (one structure) and ferulic acid (three different structures) in cereal cell walls and therefore may have a similar influence on cell-wall structure to that of the diferulic acids.[3]
Sinapine is an alkaloidal amine found in black mustard seeds. It is considered a choline ester of sinapic acid.[4]
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