In 2006 Geza Schoen, a German perfumer, bottled a single aroma chemical and sold it as a finished perfume. Molecule 01 has one ingredient, Iso E Super, a molecule with a woody amber smell that chemists John Hall and James Sanders invented in 1973 at the American fragrance firm International Flavors & Fragrances. They designed it as a cheap, durable substitute for cedarwood, and for its first decades it mostly scented laundry detergent and soap. Then perfumers noticed that it strengthened the scents they combined with it. By 1988 Iso E Super made up about a quarter of Dior's Fahrenheit. Schoen first proposed the single-ingredient perfume to Diesel, but the brand declined, so he launched it himself. Molecule 01 became one of the best known niche fragrances in the world, even though roughly one in five people cannot smell it at all. The patent has long since expired, and manufacturers now sell the molecule under more than thirty names. The US imports about 90,000 pounds of it a year for household soaps and cleaning products, and no US plant makes it.

A solvent used in air fresheners, cleaners, candles, and paints sells for $133 per gram, 1.4 times the price of gold. Butyl dipropasol is a solvent: it helps dissolve fragrance oils, cleaning ingredients, and coating additives so they spread evenly instead of separating. That makes it useful when a product has to smell consistent, clean consistently, or lay down a smooth film. A2B Chem LLC in the US sells 1 gram for $133. AA BLOCKS in the US sells 1 gram for $141. This is one of 920 molecules selling today for more than gold per gram. Here's the list:

In 1932 Albert Szent-Gyorgyi, a Hungarian chemist, proved that hexuronic acid was vitamin C, the compound whose absence causes scurvy. He had first extracted it from adrenal glands but needed far more than glands could give, so he turned to paprika, the crop his town of Szeged was famous for. His lab processed two thousand kilos of paprika to extract about half a kilo of pure white crystals. He won the Nobel Prize in 1937. Manufacturers now produce the compound, L-ascorbic acid, as a powder for supplements, IV bags, prenatal vitamins, and breakfast cereal. The US made it for decades at a plant in Belvidere, New Jersey, but the production line shut down in 2005 under pressure from cheaper Chinese product. The US now imports about 190 million dollars of it a year, 73% of that from China, and has no domestic production.

An ear-drop ingredient used for ear infections sells for $1,022 per gram, 11 times the price of gold. Thonzonium bromide is a surfactant. It helps ear-drop liquid spread across waxy, inflamed tissue so antibiotic ingredients can reach the infection instead of beading up at the surface. A2B Chem LLC in the US sells thonzonium bromide for $511 for 500 milligrams. Molnova in China sells it for $597 for 500 milligrams. This is one of 838 molecules selling today for more than gold per gram. Here's the list:

A fugitive named the chemical now used to make California's desert vines bud each winter. Stanislao Cannizzaro fought as an artillery officer in Sicily's failed 1848 revolution, then escaped to Paris. There in 1851 he and the French chemist Francois Cloez bubbled cyanogen chloride gas through a flask of ammonia and named the white crystals that formed cyanamide. Grape growers in the deserts of California and Arizona now spray cyanamide across miles of bare winter vines to make up for the cold the buds never received. In Japan doctors have prescribed the same molecule for decades to help heavy drinkers quit. Patients take it daily as a one percent solution, which blocks the liver enzyme that clears alcohol's first toxic byproduct, so even one drink causes flushing and nausea. For more than a century after its discovery, cyanamide was too unstable to sell. A German firm worked out how to stabilize it in 1965 and today calls itself the last Western producer. The US imports over 400,000 pounds of it a year and reports no production of its own.

A waxy ingredient in skin-care creams sells for $147.20 per gram, 1.5 times the price of gold. Behenyl behenate is an emollient. It gives creams and sticks a smooth, waxy feel, helps ingredients spread evenly, and leaves skin feeling less dry while keeping the formula thick. Aaron Chemicals LLC in Hong Kong lists behenyl behenate at $736 for 5 grams. Angene Chemical in Hong Kong lists it at $741 for 5 grams. This is one of 838 molecules selling today for more than gold per gram. Here's the list:

In 1888 Fritz Blau, a chemist, heated a dry copper salt and distilled a new compound, a plain white solid that turned intense red on contact with a trace of iron. He named it dipyridyl; its current name is 2,2'-bipyridine. Blau needed ten more years to explain the red color. Three bipyridine molecules bind a single iron atom to form a tightly bound group, or complex. Chemists found this binding so useful that a century later they called bipyridine the most widely used metal-binding molecule in their field. Clinical kits still use Blau's red reaction every day to measure iron in blood samples. When ruthenium replaces iron in the same three-molecule complex, it gives off light under an electric current, and hospital analyzers use that light to read HIV and hepatitis tests. Farmers also spray diquat, a weedkiller with a molecular structure based directly on bipyridine. The US imports about 40,000 pounds of bipyridine a year and reports no production of its own.

A long-acting schizophrenia injection sells for $1,040 per gram, 11 times the price of gold. Haloperidol decanoate is the long-acting form of haloperidol. After injection, the body releases the medicine slowly, letting patients stay covered between visits instead of relying on daily pills. That steady release helps keep schizophrenia symptoms from returning. BLD Pharmatech Ltd. in China lists haloperidol decanoate at $260 for 250 milligrams. Aaron Chemicals LLC in Hong Kong lists it at $106 for 100 milligrams. This is one of 838 molecules selling today for more than gold per gram. Here's the list:

In 1966 Leland Clark, a biochemist, submerged a mouse in a clear liquid and watched it keep breathing. The liquid was perfluoro-2-butyltetrahydrofuran, a fluorocarbon that holds enough dissolved oxygen for an animal to breathe the liquid. Clark's mice drew it in and out of their lungs for hours before returning to air and living for weeks. Clark's report in Science led researchers to study liquid breathing and artificial blood for decades. The fluid later came into regular use in electronics. 3M sold it as Fluorinert FC-75 to cool circuits that air cannot cool, since it carries heat without conducting electricity. After making it for decades, 3M shut down the production lines when it left fluorochemical manufacturing entirely at the end of 2025. The US now has no domestic production. For 2019, US companies reported to the EPA that they imported about 56,000 pounds of it.

A green dye used to color fabric sells for $140 per gram, 1.5 times the price of gold. The dye gives textiles a durable green shade. Manufacturers care because fabric color has to survive washing, light, and repeat production without drifting from one batch to the next. TargetMol Chemicals in the United States sells C.I. Vat Green 1 for $70 for 500 milligrams. MedChemExpress MCE in Sweden sells it for $145.20 for 1 gram. This is one of 838 molecules selling today for more than gold per gram. Here's the list: