2,5,6,6-Tetramethylcyclohex-1-enylcarboxaldehyde

Overview IFRA Botanical Request a quote

  • Identifiers

    CAS number
    35906-92-4

  • Properties

  • Applications

    2,5,6,6-Tetramethylcyclohex-1-enylcarboxaldehyde (CAS 35906-92-4) is an unsaturated cyclic aldehyde used mainly as a fragrance ingredient, delivering fresh green and citrus notes with subtle woody and floral nuances that boost brightness, diffusion, and substantivity in fine fragrances, soaps, shampoos, detergents, fabric softeners, candles, air-care and deodorizing products; it also serves as a versatile intermediate in organic synthesis for imine or oxime formation, reduction to the corresponding alcohol, or conversion to chain-extended derivatives, supporting structure–odor research, GC-MS reference standards for fragrance matrices, and acting as a building block for next-generation odorants or specialty ingredients at the R&D stage such as pharma and agrochemicals, with use subject to IFRA limits and appropriate management of aldehyde exposure in formulations.

    gpt-5-nano

1 2

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction

Botanical

Name CAS Botanical Proportion
Orris butter 8002-73-1 Iris florentina L., fam. Iridaceae 0.01%