Buy Butyrfentanyl Powder Online

$590.00$10,125.00

Buy Pure Butyrfentanyl Powder Online is a potent short-acting synthetic opioid analgesic drug. It is an analog of fentanyl with around one-quarter of its potency. The opioid receptor affinity of fentanyl and its analogs was determined from their inhibitory potency in a binding assay.

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