Ambroxan – All Versions Compared

There are aroma materials everyone knows. And then there is Ambroxan – the molecule that quietly changed perfumery, even though most people have never heard its name.

Dior Sauvage. Creed Aventus. Baccarat Rouge 540. Three of the best-selling perfumes of the past fifteen years. None of them would be what they are without Ambroxan.

This page explains what Ambroxan is, where it comes from, why it behaves unlike anything else – and which versions are available at Labor am Meer.

Contents

1. The origin – floating gold
2. The synthesis – 70 years of research
3. What does Ambroxan smell like?
4. Why does Ambroxan behave so differently?
5. Ambroxan in perfumery today
6. All versions compared
7. How do they differ?
8. Which version for which purpose?
9. Ambroxan vs Cetalox
10. The anosmia phenomenon
11. IFRA status and regulation
12. Frequently asked questions

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1. The origin – floating gold

Before there was Ambroxan, there was ambergris – one of the strangest and most coveted materials in human history.

Ambergris forms in the digestive tract of the sperm whale – probably as a response to indigestible squid beaks. The whale expels the mass, which drifts in the sea for years, is transformed by sun, salt water and time, and develops a scent like no other: warm, mineral, salty, dry, somehow alive.

Perfumers called it floating gold. Rare. Expensive. Irreplaceable – until chemists proved that it could be replaced after all.

For centuries, ambergris was the reason great perfumes lasted so long and felt so deep. It had a quality no other material could reproduce: it made other aroma materials richer, deeper and more alive – without stepping into the foreground itself.

Then chemists made it obsolete.

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2. The synthesis – 70 years of research

In 1950, Firmenich patented a method for synthesising ambroxide from sclareolide – a substance derived from sclareol, the diterpene of clary sage (Salvia sclarea). That was the beginning.

But the story has a twist few people know: the molecule was synthesised in 1950 and put to use in perfumery straight away – although nobody knew whether it actually occurs in ambergris.

Only in 1977 – 27 years later – did IFF chemists prove through chromatographic analysis that Ambroxan really is the main odorant of natural ambergris. The right molecule had been synthesised without anyone knowing it was the right one.

The key milestones:

• 1950 – Firmenich synthesises ambroxide from sclareol. First commercial use as Ambrox®
• 1970s – Henkel registers Ambroxan for functional perfumery. The mass market begins
• 1977 – IFF chemists prove that Ambroxan is the key odorant in natural ambergris
• 1988 – Firmenich develops a fully synthetic route without sage oil: Ambrox DL (racemic mixture)
• 1993 – Firmenich introduces Cetalox® – the racemic version with a creamy, musky profile
• 2016 – Firmenich (today dsm-firmenich) scales up Ambrox® Super via white biotechnology – the pure (−)-enantiomer from the fermenter
• 2019 – Givaudan introduces Ambrofix™ – made biotechnologically from sugarcane, 100% renewable carbon

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3. What does Ambroxan smell like?

This is the hardest question to answer – because Ambroxan is perceived completely differently depending on concentration, carrier and skin chemistry.

On a blotter: dry, woody, slightly mineral, a kind of dry warmth. To some it smells of old wood, to others of warm skin, to others still of a breath of salty sea air.

On skin, the real phenomenon unfolds. Ambroxan interacts with body heat and individual skin chemistry – it smells different on every person. That is not a flaw of the molecule. It is how it is built.

Ambroxan is perceived as:

• dry woody amber
• warm mineral facets
• light salty sea-air nuances
• subtle skin warmth
• clean clarity
• transparent depth
• a long-lasting, skin-close drydown

Geza Schoen – the perfumer behind Escentric Molecules – described Ambroxan as a molecule that unites opposing facets: mineral and clear, yet warm and animalic at the same time. A radiance that hardly any other raw material achieves.

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4. Why does Ambroxan behave so differently?

Ambroxan is not an ordinary fixative. It is an amplifier.

At low doses it makes other aroma materials richer, deeper and more present – without being perceived as a note of its own. A woody accord feels woodier. A musk feels closer to the skin. A composition feels more complete.

At higher doses, Ambroxan itself moves to the foreground with a characteristic dry, warm amber signature that – unlike sweet amber accords – comes across as clear and unmistakable.

The physical reasons for its persistence:

• Low vapour pressure – evaporates extremely slowly
• High molecular weight (236.4 g/mol) – stays on surfaces longer
• High log Pow – strong affinity for skin and fibres
• Chiral (−)-enantiomer – the olfactorily active form with maximum receptor binding

On a blotter, Ambrofix™ remains perceptible for one month at doses from traces to 2% – a figure from Givaudan's official material data.

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5. Ambroxan in perfumery today

Ambroxan is found today in around 60% of all fine fragrances launched after 2010. No other synthetic aroma material has reached comparable market penetration in that period.

The reasons:

• It works in practically every fragrance family – from aquatic to oriental
• It amplifies other materials without changing their character
• It gives compositions transparency and depth
• It is a fixative and a character molecule in one

Well-known perfumes with a high Ambroxan content:

• Dior Sauvage – Ambroxan as the central structural molecule of the base
• Creed Aventus – Ambroxan gives the drydown its characteristic depth
• Baccarat Rouge 540 (MFK) – Ambroxan at around 17–18% of the concentrate according to GC-MS analyses
• Molecule 02 (Escentric Molecules) – Ambroxan as the only ingredient, neat in ethanol
• Louis Vuitton Imagination – Ambroxan as the lead molecule

Without Ambroxan, the perfumery of the past fifteen years would look completely different.

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6. All versions compared

Ambroxan is not one uniform product. Several major manufacturers produce it under their own trade names – each with the same base molecule (CAS 6790-58-5), but a different manufacturing process, enantiomer ratio and profile.

Available at Labor am Meer:

Product	Manufacturer	Process	Distinctive feature	Availability
Ambrofix™	Givaudan	Biotechnological from sugarcane (since 2019)	100% renewable carbon, controlled optical purity, readily biodegradable, 1 month on blotter	✅ Available
Ambermor®	IFF	Synthetic	Purity >99% (GC), classic dry ambroxide profile	✅ Available
Ambrox® Super	dsm-firmenich	White biotechnology (since 2016)	Pure (−)-enantiomer from the original house, 100% renewable carbon, 1 month on blotter – full reference	✅ Available
Ambroxide Cryst.	Symrise	Semi-synthetic from sclareol	Crystals ≥ 99% (GC), 100% renewable carbon, bleach-stable – full reference	✅ Available

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7. How do they differ?

Ambroxan is a chiral molecule – it has an asymmetric carbon atom and exists in two mirror-image forms (enantiomers). Only the (−)-enantiomer is strongly olfactorily active.

Depending on the synthesis route, the following vary:

• Enantiomer ratio – how much active (−)-enantiomer is present
• Overall purity – how much Ambroxan relative to by-products
• Starting material – sclareol, sugarcane or fully synthetic
• Sustainability – renewable carbon yes/no, biodegradability

Ambrofix™ – biotechnological from sugarcane, 100% renewable carbon, controlled optical purity. Readily biodegradable (71% after 28 days, OECD 301F).

Ambermor® – synthetic, purity >99% (GC). Classic, dry ambroxide profile.

Ambrox® Super – the pure (−)-enantiomer from the original house, made via white biotechnology since 2016. The forefather of the family, reborn in the fermenter – details in its full reference.

Ambroxide Cryst. – Symrise, crystalline form, semi-synthetic from sclareol, bleach-stable – details in its full reference.

In practice, the differences in odour profile are often subtle. What really sets the versions apart is the manufacturing process and the sustainability balance.

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8. Which version for which purpose?

There is no universally best version – the choice depends on the context:

• Sustainability first – Ambrofix™: 100% renewable carbon, biotechnological, readily biodegradable
• High purity, classic profile – Ambermor® IFF: >99% GC purity
• The original, enantiopure – Ambrox® Super: the pure (−)-enantiomer from the house that founded the molecule family
• Classic sclareol route, bleach-stable crystals – Ambroxide Cryst. by Symrise
• Comparative formulation – test several versions side by side

Typical dosages (apply to all versions):

• 0.05–0.3% – invisible fixation, deeper drydown
• 0.3–1% – subtle amber depth, improved projection
• 1–2% – clear Ambroxan signature
• above 2% – Ambroxan dominates the base. Baccarat Rouge 540: ~17–18%

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9. Ambroxan vs Cetalox – what is the difference?

Cetalox® (CAS 3738-00-9) and Ambroxan (CAS 6790-58-5) are not the same.

Ambroxan is the (−)-enantiomer – dry, woody, mineral. Cetalox is a racemic mixture – creamier, softer, with more of a musky nuance. Some niche perfumers prefer Cetalox for its warmer, less technical character.

Practical tip: 4:1 Ambroxan to Cetalox gives a balanced cashmere-amber accord.

Firmenich introduced Cetalox in 1993 – 43 years after Ambrox. Not a copy, but a deliberate development with a different character.

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10. The anosmia phenomenon

Some people perceive Ambroxan only faintly or not at all; research links this to the olfactory receptor OR7A17 – we tell the full story in our reference on Ambrox® Super.

This explains a familiar experience: people wear Dior Sauvage and wonder why everyone around them reacts so enthusiastically while they themselves barely smell anything. The answer is often a partial anosmia to Ambroxan.

The molecule still works in the formula – other people perceive it clearly.

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11. IFRA status and regulation

Ambroxan (CAS 6790-58-5) is subject to no quantitative IFRA restrictions in any application category. This applies to all trade names in the ambroxide family.

• CAS no.: 6790-58-5
• EINECS: 229-861-2
• REACH: 01-2120070784-50
• Customs tariff number: 2932990090
• Hazard classification: not hazardous under (EC) No. 1272/2008
• Transport: not classified as dangerous goods (ADR/IMDG/IATA)

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Frequently asked questions about Ambroxan

What is Ambroxan?

Ambroxan (CAS 6790-58-5) is a synthetic amber molecule that reproduces the effect of natural ambergris. It is found in around 60% of all fine fragrances since 2010.

What is the difference between Ambroxan and Ambrofix™?

Both are based on CAS 6790-58-5. Ambrofix™ is Givaudan's trade name for the version made biotechnologically from sugarcane with 100% renewable carbon. Ambroxan is the generic term for the molecule.

Is Ambroxan the same as Cetalox?

No. Cetalox® (CAS 3738-00-9) is a racemic mixture with a creamier, softer profile. Ambroxan is the active (−)-enantiomer – dry, woody, mineral.

Are there IFRA restrictions?

No. Ambroxan is not subject to any quantitative IFRA restrictions.

Why can some people not smell Ambroxan?

Some people perceive Ambroxan only faintly or not at all; research links this to the olfactory receptor OR7A17 (see Ambrox® Super).

How do you dissolve Ambroxan?

White crystals. In ethanol, IPM or DPG – warm gently and stir. At low temperatures it can crystallise – reversible by warming.

Which version is the best?

There is no universally best version. Ambrofix™ stands out for sustainability, Ambermor® for purity >99%, Ambrox® Super as the pure (−)-enantiomer from the original house, and Ambroxide Cryst. for the classic sclareol route and bleach stability. It is worth testing them all.

How the molecule was first discovered is told in our story Ambrox – the molecule born by accident (in French).

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More about Ambrofix™ by Givaudan: Ambrofix™ – The Complete Reference →

More about Ambrox® Super: Ambrox® Super – the molecule science is only now beginning to understand →

More about Ambroxide Cryst.: Ambroxide Cryst. – Ambroxan from Holzminden →

All four versions in one table with price, form and sizes: Ambrofix vs Ambroxan – comparison →

Buy Ambroxan – all versions → Buy Ambrofix™ → Buy Ambermor® → Buy Ambrox® Super → Buy Ambroxide Cryst. →