Smoked, swallowed or taken intravenously, bath salts were popular because of the “high effect” caused by the release of dopamine when consumed. Today, although illegal, there are still manufacturers of bath salt. To avoid regulating drug use under federal and state laws, synthetic cathinones may be mislabeled as “Not for Human Consumption” or referred to as bath salts, plant foods, research chemicals, or jewelry cleaners. Reddit.com (2021) Does A-d2pv have a sexually stimulating effect? Is there a change in tactile sensation? www.reddit.com/r/researchchemicals/comments/l3xcgv/does_ad2pv_have_a_sexual_stimulant_effect_is/. Retrieved 18 July 2022. New versions of these synthetic compounds are constantly coming onto the market, and then suddenly withdrawn to prevent a legal reaction to their manufacture and sale. Other NPS are synthetic cannabinoids, synthetic opioids, and MDMA. Each state currently uses different administrative measures, enforcement strategies, and product labeling and marking regulations to quickly ban individual substances or criminalize their sale. Most states have also passed criminal and civil penalties (and many others have pending laws) for the sale of products that attempt not to be advertised as “synthetic drugs” by claiming they are “not for human consumption.” Cayman Chemical (2020) 3,4-Methylenedioxy-α-methylaminoisohexanophenone (hydrochloride). www.caymanchem.com/product/30705/3%2C4-methylenedioxy-%EC%B1-methylaminoisohexaphenone-(hydrochloride. Retrieved 18.
July 2022 Stopping regular use of synthetic cathinones causes withdrawal symptoms such as: Synthetic cathinones can be purchased on the Internet and in pharmacies. EMCDDA information also indicates that most of the quantities of synthetic cathinones seized at the EU`s external borders in 2020 originated in India, while similar shipments before 2020 came mainly from China. The introduction of regulatory controls in China for a number of substances, including 3-methylmethcathinone and 3-chloromethcathinone, as well as possible supply disruptions due to the COVID-19 pandemic, may have contributed to this development and facilitated the resurgence of 3-methylmethcathinone and 3-chloromethcathinone in the EU+2. In 2021, a total of 1 500 kilograms of 3-methylmethcathinone and 3-chloromethcathinone were seized in the EU+2 from India (EMCDDA 2022). Synthetic stimulants – cathinones, or also known as “bath salts” (alpha-PHP, 4-CMC, N-ethylhexedrone, others) reflect the same effects as illicit drugs such as cocaine, methamphetamine and MDMA. These synthetic chemicals in bath salts are highly toxic and addictive. Their use is associated with an increase in visits to emergency rooms and poison control centres (archives.drugabuse.gov/blog/post/bath-salts-emerging-danger). The phenomenon of new psychoactive substances (NPS) is a recurring problem in modern forensic toxicology. One of the most important groups among NPS are synthetic cathinones, which are derivatives of cathinone, a natural alkaloid found in the shrub Catha edulis.
This substance has been shown to have psychoactive properties, with a centuries-old tradition widespread among the population of the Arabian Peninsula of chewing the leaves of this plant for recreational purposes [1,2,3]. The last decade has been marked by remarkable dynamics of change in the illicit drug market, with the constant introduction of new synthesized substances to circumvent regulations. This phenomenon also applies to synthetic cathinones [4,5,6]. Due to the highly variable nature of the NPS phenomenon, the latest emerging derivatives are largely unknown in terms of pharmacological properties and toxicity; Therefore, the most relevant information comes from reported cases of fatal and non-fatal poisoning [7,8,9]. Among the synthetic cathinones that appeared in 2019-2021, only a few of them have reports of poisoning cases. Most information on poisoning cases exists for the most popular compounds in 2019-2021 – N-ethylhexedrone, ephylon and eutylon, while much of the newly formed derivatives are their structurally similar analogues. In the absence of direct data, the results of SAR studies can be used to predict and estimate the properties of new derivatives. In addition, data on pharmacodynamics, pharmacokinetics and toxicity are very limited. The NPS phenomenon remains a significant challenge due to its evolving nature. The range of compounds currently on the drug market is constantly evolving, with new unknown substances entering the market every year. Despite the implementation of regulatory countermeasures and the development of comprehensive early warning systems and their adaptation to the current situation, NPS, including synthetic cathinones, are still available and widely used [78, 79].
One possible reason for the persistent phenomenon of NPS is the lack of international consensus on the legal control of these drugs, although there is common ground for UN member states, namely the three international drug control conventions: the 1961 United Nations Single Convention on Narcotic Drugs, the 1971 United Nations Convention on Psychotropic Substances and the 1988 UN Convention against drug protection. illicit trafficking in narcotic drugs and psychotropic substances. Different legislative approaches in each country influence the emergence and control of the local drug market and may contribute to different dynamics of the development of NPS situations in different regions of the world [80, 81]. Some countries base their pharmaceutical policies on individual lists, others on generic legislation or similar control, and in many countries there is a hybrid system based on solutions from different legislative approaches [81,82,83,84]. In 2013, UNODC issued an Early Warning Notice (EWA) in response to the increasing prevalence of NPS globally [85]. From inception in 2013 to early 2022, a total of 136 countries notified a total of more than 1100 individual substances [86]. In addition, the EMCDDA had monitored around 830 NPS at European level by the end of 2020, of which 46 were detected for the first time in Europe in 2020 [87]. In recent years, the number of substances notified in Europe has remained more or less constant at 400 compounds per year. In 2019, synthetic cathinones (156 compounds) were the second most abundant group after synthetic cannabinoids (209 compounds); these categories accounted for almost 60 % of seizures in EU Member States [87]. In synthetic opioids manufactured in secret laboratories, active pharmaceutical ingredients may vary from batch to batch and never be used in the same amounts. Duart-Castells L, Nadal-Gratacós N, Muralter M, Puster B, Berzosa X, Estrada-Tejedor R, Niello M, Bhat S, Pubill D, Camarasa J, Sitte HH, Escubedo E, López-Arnau R (2021) Role of aminoterminal substitutions in the pharmacological, rewarding and psychostimulant profiles of new synthetic cathinones. Neuropharmacology 186:108475.
doi.org/10.1016/j.neuropharm.2021.108475 (open access article) Stimulants exert a stimulating effect on the central nervous system, affecting the levels and action of important neurotransmitters: dopamine, norepinephrine and serotonin.