p-Methoxybenzyl 2(or 3-)methylbutyrate

Overview IFRA Botanical Request a quote

  • Identifiers

  • Properties

  • Applications

    p-Methoxybenzyl 2(or 3-)methylbutyrate is the PMB ester of 2-methylbutyric acid, commonly used as a carboxyl protecting group in complex organic syntheses, helping to preserve the carboxyl function during other steps and allowing deprotection later; it can also serve as a building block or intermediate in fragrance chemistry and cosmetics, providing a route to aroma compounds or masked fragrance precursors used in perfumery and personal care products; in the pharmaceutical sector, it is a useful intermediate for synthetic routes involving ester functionality and PMB-protecting-group strategies; and in materials and polymer research it can be used as a protected-ester reagent or building block for specialty polymers and related aromatic material systems.

    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
Pimpinella peregrina root Pimpinella peregrina L., fam. Apiaceae (Umbelliferae) 0.45%
Pimpinella saxifraga root Pimpinella saxifraga L., fam. Apiaceae (Umbelliferae) 1.74%