Cyanoacetic acid
ALDRICH/C88505 - 99%
Synonym: 2-Cyanoacetic acid; Cyanoethanoic acid; Malonic mononitrile; Monocyanoacetic acid
CAS Number: 372-09-8
Empirical Formula (Hill Notation): C3H3NO2
Molecular Weight: 85.06
EC Number: 206-743-9
MDL Number: MFCD00002677
Linear Formula: NCCH2COOH
Product Type: Chemical
| assay | 99% |
| bp | 108 °C/0.15 mmHg (lit.) |
| form | crystals |
| InChI | 1S/C3H3NO2/c4-2-1-3(5)6/h |
| InChI key | MLIREBYILWEBDM-UHFFFAOYSA |
| mp | 64-70 °C (lit.) |
| Quality Level | 100 ![]() |
| SMILES string | OC(=O)CC#N |
| solubility | H2O: 50 mg/mL, clear, colorless to very faintly yellow |
| vapor pressure | 0.1 mmHg ( 100 °C) |
| Application: | Cyanoacetic acid can be used as a reagent: • Along with acetic anhydride for cyanoacetylation of various pyrroles, indoles, and aniline derivatives. It can also be used in other reactions such as cyclizations, syntheses of coumarins and other heterocycles. • To prepare of key intermediate via Knoevenagel condensation in the total synthesis of 5-acetamido-substituted melatonin derivatives as MT3 receptor ligands. • In the synthesis of aminopyrrolinone derivatives by reacting Ugi adducts of cyanoacetic acid and aromatic aldehydes. |
| Packaging: | 1 kg in glass bottle |
| Packaging: | 25, 500 g in glass bottle |
| Symbol | ![]() GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H302 + H332 - H314 |
| Precautionary statements | P260 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P304 + P340 + P312 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 20/22-31-34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 3261 8 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 224.6 °F - closed cup |
| Flash Point(C) | 107 °C - closed cup |
| Supplemental Hazard Statements | EUH031 |
| Purity | 99% |
| bp | 108 °C/0.15 mmHg (lit.) |
| mp | 64-70 °C (lit.) |
| UNSPSC | 12352100 |



