Một dự án của Lê Mai A Lê Mai project · go to lemai.com.vn

Aurantiol (Schiff base)

Methyl 2-[(7-hydroxy-3,7-dimethyloctylidene)amino]benzoate

Aurantiol, Hydroxycitronellal methyl anthranilate, Aurantion

Schiff base (imine) · Schiff base · C₁₈H₂₇NO₃

Chemical structure of Aurantiol (Schiff base)
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
89-43-0
Molecular formula
C₁₈H₂₇NO₃
Molecular weight
305.42 g/mol
Origin
Synthetic
Odor family
Floral
Note
Base
Aroma
Orange blossom, honeyed, sweet and warm; very long-lasting.

History

Aurantiol is the Schiff base formed when hydroxycitronellal reacts with methyl anthranilate. It is yellow-orange and far longer-lasting than its two parents.

In perfumery

Used in orange blossom and white floral bases. It can discolour products. On hydrolysis it releases hydroxycitronellal, a labelled EU allergen.

Connections

EvokesOrange blossom
Found in natureMethyl anthranilate (component), Hydroxycitronellal (component)

Regulatory status

Releases an allergen
IFRA 51
No dedicated IFRA Standard in the IFRA library as of Amendment 51.
EU CosReg
No specific entry in Annex II or III of Regulation (EC) 1223/2009.
EU allergen 2023/1545
Not on the list of fragrance allergens requiring labelling, including after Regulation (EU) 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 89-43-0
  2. IFRA Standards Library, Amendments up to 51
  3. Regulation (EC) No 1223/2009, consolidated text of 18.05.2026, Annexes II and III