Methyl cyclopentenolone
ALDRICH/W270008 - anhydrous, 98%, FCC, FG
Synonym: Cyclotene
CAS Number: 80-71-7
Empirical Formula (Hill Notation): C6H8O2
Molecular Weight: 112.13
EC Number: 201-303-2
Linear Formula: C6H8O2
Product Type: Chemical
| agency | follows IFRA guidelines |
| application(s) | flavors and fragrances |
| assay | 98% |
| biological source | synthetic |
| documentation | see Safety & Documentation for available documents |
| food allergen | no known allergens |
| fragrance allergen | no known allergens |
| grade | anhydrous |
| FG | |
| Fragrance grade | |
| Halal | |
| Kosher | |
| InChI | 1S/C6H8O2/c1-4-2-3-5(7)6( |
| InChI key | CFAKWWQIUFSQFU-UHFFFAOYSA |
| mp | 104-108 °C |
| organoleptic | caramel; coffee; maple; roasted; sweet |
| Quality Level | 300 ![]() |
400 ![]() |
|
| reg. compliance | EU Regulation 1223/2009 |
| EU Regulation 1334/2008 & 178/2002 | |
| FCC | |
| FDA 21 CFR 172.515 | |
| SMILES string | CC1CCC(=O)C1=O |
| Application: | This material is found primarily as the enol form (CAS 80-71-7) in its pure, anhydrous state. Readily forms the diketone form (CAS 765-70-8) in solution. |
| General description: | Methyl cyclopentenolone has been identified in maple syrup, Wasanbon sugar and raw cane sugar. |
| Packaging: | 1 kg in poly bottle |
| Packaging: | 100 g in poly bottle |
| Packaging: | 25 kg in fiber drum |
| Packaging: | 5 kg in poly drum |
| Symbol | ![]() GHS05,GHS07 |
| Signal word | Danger |
| Hazard statements | H302 - H317 - H318 |
| Precautionary statements | P261 - P264 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 2 |
| Flash Point(F) | 212.0 °F |
| Flash Point(C) | 100 °C |
| Purity | 98% |
| mp | 104-108 °C |
| FEMA Number | 2700 |
| UNSPSC | 12164502 |



