Synthetic vs tobacco-derived nicotine: what changes for manufacturers

Nicotine for pouches, e-liquids, heated products and nicotine replacement therapy comes from two places: it is extracted from tobacco leaf, or it is made by chemical synthesis, in which case the industry often calls it tobacco-free nicotine (TFN). For a buyer or formulator the question is whether the source changes the product. The answer depends on which synthetic nicotine you buy.

The same molecule, if it is (S)-nicotine

Nicotine exists in two mirror-image forms, (S) and (R). Tobacco makes almost only the (S)-form: tobacco-derived pharmaceutical nicotine is about 99% (S)¹.

Synthetic nicotine comes in two kinds. Racemic nicotine is a 50:50 mix of (S) and (R)¹, so it is not the same product as tobacco-derived nicotine. (S)-nicotine made by an enantioselective route is the same molecule the plant makes.

ESSENZ builds the (S)-form directly by chiral catalysis, with no resolution step. Our first industrial batch (149 kg, September 2026) had an enantiomeric excess of 99.85%, which is 99.9% (S)².

Where the impurities come from

Purification removes most impurities from both kinds of nicotine. What has to be removed depends on the source.

• Tobacco-derived nicotine carries what the plant and its processing contain. USP and Ph. Eur. limit seven related impurities in nicotine; two of them, anabasine and anatabine, come only from the plant¹³. Tobacco-specific nitrosamines (TSNAs) form when tobacco alkaloids react with nitrite as the leaf is cured and stored⁴, and pesticides are used on the crop⁵.
• Synthetic nicotine involves no leaf, no curing and no crop. Its impurities come from the route and its starting materials, so they are set by the process and controlled by the specification.

In numbers: three commercial lots of tobacco-derived pharmaceutical nicotine measured 99.7–99.96%, taking purity as 100% minus the seven USP related compounds¹. Our first industrial batch measured 99.9%, as 100% minus total impurities of 0.10%². The pharmacopoeias set the same limits whatever the origin: an assay of 99.0–101.0% and total related substances of no more than 0.8%³.

Supply: a growing season or a process

Tobacco is harvested once a year, and yield and leaf quality vary with origin and weather⁶, so every new lot needs requalifying. Synthetic nicotine is made year-round from defined inputs. ESSENZ produces under contract at a GMP-certified partner site, with capacity of up to 10 t a month.

Land and water

Nicotine from tobacco needs cropland, and the difference in footprint is large. In our screening estimate per tonne of nicotine, tobacco-derived nicotine takes 5.6–38 ha of land and 30,200–204,000 m³ of water, depending on whether the leaf is grown for nicotine or the nicotine comes from by-products of leaf processing. ESSENZ synthetic nicotine takes about 0.01 ha and 1,100 m³: more than 99% less land and more than 95% less water⁷. This is a screening estimate, not a certified life-cycle assessment, and carbon is not compared.

Regulation and documentation

Regulators increasingly treat nicotine alike whatever its source. In the United States, products made with non-tobacco nicotine, including synthetic nicotine, have been subject to the FDA's tobacco product requirements since 14 April 2022⁸. Requirements in other markets differ, and manufacturers are asked for clear documentation of the nicotine they use.

ESSENZ ships a certificate of analysis with every batch and provides the safety data sheet and specification on request. A US Tobacco Product Master File is in preparation and our EU REACH route is under review. Client audits are welcome under NDA.

Checklist: qualifying a synthetic nicotine

• Which form is it, (S)-nicotine or racemic? Ask for the enantiomeric excess or the specific rotation.
• Certificate of analysis: assay, related substances and total impurities, water, residual solvents.
• Specification and test methods, and how they map to Ph. Eur. and USP.
• Nitrosamine testing: which compounds, which method, which limit of quantification.
• Safety data sheet, packaging and storage conditions.
• Samples, and an audit of the manufacturing site.

Our samples start at 10 g and ship within two weeks with a full certificate of analysis.