Precursor is a chemical used in the manufacture of drugs that are in control. In general, the precursors used legally / officially in industrial processes and most traded in international trade.

The chemical is not in the special supervision, but the export and import and supply of precursors to individuals and companies whose use is not for use in industry is a clue that there is a possibility of these activities are illegal activities.

Precursor term used for materials that are not narcotic, but used in a variety of ways to process or make the narcotics or psychotropic substances.

Depending on their chemical properties, chemical precursors can be joined with other substances to be used as drug (or in the form of intermediaries), or can work as an acidic substance.

Here is a list of some of the precursors to manufacture legal drugs and materials commonly used in various industries.

LIST OF IMPORTANT PRECURSOR AND USE OF THE LEGAL AND ILLEGAL
NoPrecursorAppearanceIllegal UsedLegal Used
1acetic anhydrideLiquid, colorless smells like vinegarProduce heroin, and mecloqualon methaqualonMaterials for the textile dye makersMaterials for the textile dye makers
2AcetoneLiquid colorless, evaporate quickly, smells like nail polishSolvents in processing opium and coca leaves to produce heroin and cocaine, as well as a solvent in the synthesis of amphetamine and methamphetamineCommon solvent in chemical laboratories and industrial chemical / pharmaceutical
3ChloroformColorless, easy to move, quickly evaporates, the liquid is not flammable, sweet-smellingSolvent in the manufacture of cocaine and heroin and other drug synthesisCommon solvent in chemical laboratories and industrial chemical / pharmaceutical
4Ephedrine Crystals or small grains and feels like a soap when held, or small crystals shaped needle. White or slightly yellowishSynthesis of methamphetamineproducing drugs
5Ethyl EtherColorless liquid, mobile, volatile, sweet-smelling, and feeling that burnSolvent in the manufacture of heroin, cocaine, amphetamines, methamphetamine, MDMACommon solvent in chemical laboratories and industrial chemical / pharmaceutical
6hydrochloric acidClear liquid, ranging from colorless to pale yellow, smoky with a strong odorProducing heroin hydrochloride, amphetamine, methamphetamine, MDMANeutralize the alkaline conditions; as a catalyst and solvent in organic synthesis, in cleaning metal products
73-4 methylenedioxy phenyl-2-pro-panon[3,4-MDP-2-P][PMK]Oily liquid, light yellow color, smells like fennelsynthesis of MDMANo known use of the legal
81-phenyl-2-propanon [P2P]Liquid colorless or slightly yellowish, viscosity is mediumSynthesis of amphetamine and methamphetamineUsed in chemical and pharmaceutical industry
9Phenylacetic Acid White powder with strong smell Synthesis of methamphetamine and amphetamines and 1-phenyl-2propanon [P2P]Used in chemical,  pharmaceutical and pesticide industry
10PiperonalShiny crystals colorless, shaped needles, smelling deliciousSynthesis of MDMAProducing perfume, cherry and vanilla flavors, as a component of insect repellent
11PseudoephedrineWhite crystal, odorless, needles crystallineSynthesis of methamphetamineDecongestant drug production
12SafrolLiquid or colorless crystal or slightly yellowish, smells like “sassafras”Synthesis of MDMAIn producing perfume and fragrance materials, producing piperonal, processed fats in soap making
13Sulfuric Acidclear oily liquid, colorless, odorless, more viscous than waterFor the extraction of cocaine and changing process from coca paste into cocaine base, the process of producing amphetamines, MDMA and methamphetamineNeutralize the alkaline conditions, as catalysts in organic synthesis, in the manufacture of fertilizer, paper dyes, as cleaners and metal pipelines, in battery fluid
14Thionyl ChlorideSmoky liquid, ranging from colorless to pale yellow, or slightly reddish with a suffocating odorSynthesis of methamphetamineSynthesis of methamphetamine

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