ALERT: White powder in clear capsules containing unknown cathinone C86

FURTHER UPDATE 1 May: We’ve now identified this as eutylone, a new cathinone. You can find harm reduction advice in our more detailed eutylone post.

UPDATE Saturday 19.00: After more analysis we believe this is not n-ethylpentylone as previously stated. It appears to be an unknown cathinone that we’re calling “C86”. The harm reduction advice remains the same – treat with caution. This substance is so new that we do not know of the health risks.

Original alert: N-ethylpentylone found in powder obtained as MDMA

KnowYourStuffNZ tested pills in Dunedin today and found a particularly dangerous substance called n-ethylpentylone an unknown cathinone that we’re calling “C86”.
Two samples of white powder in clear capsules from different sources were tested and each contained a mixture of n-ethylpentylone and ethylone this single substance. We have seen this substance previously at a summer event in the North Island.

N-ethylpentylone C86 is a stimulant from the cathinone family, also called “bath salts”. It may produce short-lived euphoria followed by a long period of overstimulation including racing heart, high blood pressure, anxiety, overheating, and inability to sleep for up to 36 hours. Cathinones have been associated with deaths overseas and hospitalisations in New Zealand. Because of the high redose compulsion and low active dose, it is very easy to overdose. You can read more about n-ethylpentylone at our website. We called it “this summer’s crap drug“. We don’t know what C86 is exactly, other than that it’s a cathinone and fairly similar in chemical structure to n-ethylpentylone.

The identified pills are medium sized clear capsules containing a chalky white powder that clumps together.

When tested with Marquis reagent the samples turned orange and with Mandelin they turned dark orange. These colour changes indicate a cathinone.

Testing with the more reliable FT-IR spectroscopy suggests these pills contain a mixture of of n-ethylpentylone and ethylone an unknown cathinone which we are calling C86 that is similar to n-ethylpentylone. The amount of n-ethylpentylone C86 present may vary between pills. Alternatively, this may be a new and unknown cathinone. Yup, it’s a new one alright.

It is possible that These pills have spread throughout New Zealand, being seen by KnowYourStuffNZ from one of the country to the other, therefore any substance that looks similar to this should be treated as dangerous regardless of your location.

N-ethylpentylone has been detected in powders and pills of various colours. In total, approximately 15% of “MDMA” tested over New Years was found to contain n-ethylpentylone.

Please approach all untested substances with extreme caution. C86 has not, to our knowledge, been seen before and there is no information about safety, dosage, risks, and interactions with other drugs. We recommend avoiding this.
– safest of all, do not take it
– if consuming, start small, start slow – take a third or less, and wait at least an hour before having more
– do not snort or inject
– do not mix with other substances, including alcohol
– do not take alone


If you think you may have inadvertently consumed n-ethylpentylone a cathinone and are concerned, please contact your nearest medical service and be honest about what you believe you have taken.

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