Methoxyacetyl-f is a powerful opioid. This synthetic drug is very similar to acetyl fentanyl and FUF. Many researchers, who are looking for acetyl fentanyl for sale, prefer to purchase it’s analogue. Furanyl fentanyl acts similarly to Methoxyacetyl-f. However, fentanyl powder is not considered as legal synthetic opiates and it could be impossible to buy fentanyl online.