2,5-Dihydroxybenzoic acid
SIGMA/85707 - suitable for matrix substance for MALDI-MS, >99.0% (HPLC)
Synonym: 2,5-DHBA; DHB; Gentisic acid; Hydroquinonecarboxylic acid
CAS Number: 490-79-9
Empirical Formula (Hill Notation): C7H6O4
Molecular Weight: 154.12
EC Number: 207-718-5
MDL Number: MFCD00002460
Linear Formula: (HO)2C6H3CO2H
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 85707-10MG-F
| ε (extinction coefficient) | >2000 at 337 nm |
| analyte chemical class(es) | glycans, lipids, organic molecules, peptides, proteins |
| analyte functional class(es) | polymers |
| assay | >99.0% (HPLC) |
| cation traces | Ba: ≤5 mg/kg |
| Ca: ≤5 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| K: ≤5 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Na: ≤5 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| form | powder |
| InChI | 1S/C7H6O4/c8-4-1-2-6(9)5( |
| InChI key | WXTMDXOMEHJXQO-UHFFFAOYSA |
| mp | 200-207 °C |
| 204-208 °C (lit.) | |
| Quality Level | 100  |
| SMILES string | OC(=O)c1cc(O)ccc1O |
| suitability | suitable for matrix substance for MALDI-MS |
| technique(s) | MALDI-MS: suitable |
| Application: | 2,5-Dihydroxybenzoic acid is an ionic liquid matrix used for the analysis of biomolecules using matrix-assisted laser desorption/ionization combined with mass spectrometry. |
| Application: | Most commonly used matrix for carbohydrates. For MALDI-MS of free neutral glycans. Produces [M+Na]+ ion; may show a weaker [M+K]+ ion. Other species may be generated by the addition of the appropriate inorganic salt. |
| Hazard Codes | Xn |
| Risk Statements | 22-36/37/38 |
| Safety Statements | 26-36 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Purity | >99.0% (HPLC) |
| mp | 200-207 °C; 204-208 °C (lit.) |
| UNSPSC | 41115716 |