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Skin conditioning agents and actives

Pidobenzone

Also known as pidobenzona, K5 lipogel, pidobenzonum

CAS 138506-45-3Formula C11H11NO4Molar mass 221.21 g/mol
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Pidobenzone chemical structure, C11H11NO4, CAS 138506-45-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
138506-45-3
Formula
C11H11NO4
Molar mass
221.21 g/mol
HS code
293379
Category
Skin conditioning agents and actives

What is Pidobenzone?

Plain description, key identifiers and synonyms

Pidobenzone is a chemical substance with the molecular formula C11H11NO4 and a molar mass of 221.21 g/mol. Its CAS registry number is 138506-45-3. The IUPAC name is (4-hydroxyphenyl) (2S)-5-oxopyrrolidine-2-carboxylate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4-hydroxyphenyl) (2S)-5-oxopyrrolidine-2-carboxylate
CAS number
138506-45-3 CAS number cross-checked
Molecular formula
C11H11NO4
UNII
X7D2GSX1C1
INCI name
PIDOBENZONE
InChIKey
SDJPNDMWNUPUFI-VIFPVBQESA-N
InChI
InChI=1S/C11H11NO4/c13-7-1-3-8(4-2-7)16-11(15)9-5-6-10(14)12-9/h1-4,9,13H,5-6H2,(H,12,14)/t9-/m0/s1
Canonical SMILES
O=C1CCC(C(=O)Oc2ccc(O)cc2)N1
Isomeric SMILES
C1CC(=O)N[C@@H]1C(=O)OC2=CC=C(C=C2)O

Synonyms

  • pidobenzona
  • K5 lipogel
  • pidobenzonum
  • L-Proline, 5-oxo-, 4-hydroxyphenyl ester
  • (4-hydroxyphenyl) (2S)-5-oxopyrrolidine-2-carboxylate
  • 5-oxo-L-Proline 4-Hydroxyphenyl Ester
  • 5-Oxo-L-proline,p-hydroxyphenyl ester
  • 4-hydroxyphenyl (2S)-5-oxopyrrolidine-2-carboxylate
  • 4-Hydroxyphenyl 5-oxo-L-prolinate
  • 5-Oxo-L-proline, p-hydroxyphenyl ester
  • 4-Hydroxyphenol (l)-pyroglutamate
  • Pidobenzone (p-Hydroxyphenyl 5-Oxo-L-Proline Ester)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
221.21 g/molcalc.
Exact mass
221.0688 Dacalc.
LogP (octanol/water)
0.58calc.
Topological polar surface area
75.63 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
16calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.27calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1CCC(C(=O)Oc2ccccc2)N1

O=C1CCC(C(=O)Oc2ccccc2)N1

2 rings, 15 atoms.

13 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Pidobenzone suppliers

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Pidobenzone price

Indicative price range per kg from live supplier offers

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Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name PIDOBENZONE(skin conditioning)

Functional uses

  • Softener and conditioner

Cosmetic functions

  • Skin conditioning

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Pidobenzone is traded under.

HS 2933.79Indicative HS code

Lactams, other lactams

World exports in 2024
$16.2B
−64.4% vs 2023, imports $15.4B
2019 to 2024
Top exporters
  1. Ireland37.0%
  2. France * partner reported15.6%
  3. Spain11.3%
Top importers
  1. Germany27.8%
  2. Ireland18.9%
  3. Panama * partner reported12.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Pidobenzone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Pidobenzone, based on the data on this page

What is Pidobenzone?

Pidobenzone is a chemical substance with the molecular formula C11H11NO4 and a molar mass of 221.21 g/mol. Its CAS registry number is 138506-45-3. The IUPAC name is (4-hydroxyphenyl) (2S)-5-oxopyrrolidine-2-carboxylate.

What is the CAS number of Pidobenzone?

The CAS registry number of Pidobenzone is 138506-45-3.

What is the molecular formula and weight of Pidobenzone?

The molecular formula of Pidobenzone is C11H11NO4 and its molar mass is 221.21 g/mol.

What is Pidobenzone used for?

Use classes: Cosmetics.

Is Pidobenzone hazardous?

No GHS hazard classification for Pidobenzone is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Pidobenzone?

Pidobenzone is usually classified under HS code 293379 (Lactams, other lactams). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pidobenzone?

Post a free request on CompoundList and suppliers of Pidobenzone will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Pidobenzone?

Suppliers quote Pidobenzone on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Pidobenzone

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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