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CAS RN: 69617-84-1 | Product Number: R0121


Purity: >98.0%(GC)
  • 4-(4-Hydroxyphenyl)-2-butanol
  • 4-(3-Hydroxybutyl)phenol
9   ≥20 

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Product Number R0121
Purity / Analysis Method >98.0%(GC)
Molecular Formula / Molecular Weight C__1__0H__1__4O__2 = 166.22  
Physical State (20 deg.C) Solid
Storage Temperature <0°C
Condition to Avoid Heat Sensitive
CAS RN 69617-84-1
Reaxys Registry Number 2437673
PubChem Substance ID 253661975
MDL Number


Appearance White to Almost white powder to crystal
Purity(GC) min. 98.0 %
Melting point 68.0 to 72.0 °C
Properties (reference)
Melting Point 70 °C
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws: / Compliance with laws, Regulations
Enzyme Commission 274-056-1
Transport Information:
HS Number 2907290090
Rhododendrol: An Inhibitor of Tyrosinase.

Rhododendrol (chemical name) is a phenol compound found in extracts of White Birch (Betula pubescens) and Nikko Maple (Acer nikoense). Rhododendrol suppresses melanin biosynthesis and the mechanism is shown to be due to its competitive inhibition of tyrosinase activity. However, rhododendrol have also been found to cause white blotches on skin. Although its mechanism of action remains unknown exactly, there is a report that the white blotches may be caused by metabolites of rhododendrol.


PubMed Literature

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