Poor Cosmetic Ingredient NOAEL Data SCCS/CIR Reviewed

Isopropyl Cloprostenate

INCI: ISOPROPYL CLOPROSTENATE

Isopropyl Cloprostenate (CAS 157283-66-4) is a cosmetic cosmetic ingredient functioning as Hair conditioning agent; eyelash/eyebrow growth stimulant; synthetic. Reported NOAEL =0.015 mg/kg bw/d in rat (SCCS_vision_codex); EU Regulation 1223/2009 status: permitted; 1 safety opinion reviewed (sccs). Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.

View industrial chemical safety profile for CAS 157283-66-4 →

Auto-generated CPSR Part A draft with source citations
Function
Hair conditioning agent; eyelash/eyebrow growth stimulant; synthetic prostaglandin F2α analog
Safety Rating
POOR

Chemistry & Identifiers

Formula
C25H35ClO6
MW
467 g/mol
PubChem CID
59938277
IUPAC Name
propan-2-yl (Z)-7-[(1R,2R,3R,5S)-2-[(E,3R)-4-(3-chlorophenoxy)-3-hydroxybut-1-enyl]-3,5-dihydroxycyclopentyl]hept-5-enoate
InChIKey
OCNSAYQJDKJOLH-AHTXBMBWSA-N

Regulatory Status

EU EU Status permitted
US US Status restricted
US Notes Not specifically prohibited under 21 CFR for cosmetics; however, pharmacological activity raises drug-cosmetic boundary questions

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for Isopropyl Cloprostenate.

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Toxicological Studies

8 study endpoints found for Isopropyl Cloprostenate. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL =0.015 mg/kg bw/d dermal rat dermal absorption SCCS_vision_codex
NOAEL =0.015 mg/kg bw/d dermal rat dermal absorption SCCS_vision_codex
NOAEL =0.015 mg/kg bw/d dermal rat dermal absorption SCCS_vision_codex
NOAEL =0.015 mg/kg bw/d dermal rat dermal absorption SCCS_vision_codex
NOAEL =0.1 mg/kg bw/day oral rat reproductive toxicity SCCS_vision_codex
NOAEL =0.1 mg/kg bw/day oral rat reproductive toxicity SCCS_vision_codex
NOAEL =0.1 mg/kg bw/day oral rat reproductive toxicity SCCS_vision_codex
NOAEL =0.1 mg/kg bw/day oral rat reproductive toxicity SCCS_vision_codex

Safety Opinions

Official safety assessments from the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR).

sccs SCCS/1635/21 3 February 2022
Verdict: unknown

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Softener and conditioner

Expert Verdict

Expert safety assessment and concern-level summary for Isopropyl Cloprostenate.

NOAEL Studies Summary

View details ->

Public NOAEL study rows linked to Isopropyl Cloprostenate by CAS number or substance name.

Studies
8
Lowest NOAEL
0.015
Highest NOAEL
0.1

Units vary across source rows: mg/kg bw/d, mg/kg bw/day

SCCS_vision_codex

Chemical Function

Softener and conditioner

Frequently Asked Questions

Is Isopropyl Cloprostenate safe in cosmetics?

Isopropyl Cloprostenate has a safety rating of "POOR" in our database. EU status: permitted. US status: restricted. 8 toxicological study endpoint(s) are available in our database. This ingredient has been reviewed by sccs.

Is Isopropyl Cloprostenate allowed in the EU?

Isopropyl Cloprostenate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Isopropyl Cloprostenate do in cosmetics?

Isopropyl Cloprostenate functions as: Hair conditioning agent; eyelash/eyebrow growth stimulant; synthetic prostaglandin F2α analog. It is classified as a cosmetic ingredient in our database. CAS number: 157283-66-4.

What is the NOAEL for Isopropyl Cloprostenate?

The NOAEL (No Observed Adverse Effect Level) for Isopropyl Cloprostenate is =0.015 mg/kg bw/d based on a dermal absorption study via dermal route in rat. A total of 8 study endpoints are available. Source: SCCS_vision_codex.

Is Isopropyl Cloprostenate used outside cosmetics?

Isopropyl Cloprostenate also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

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