Protodioscin

Also known as: (3β,22R,25R)-26-(β-D-Glucopyranosyloxy)-22-hydroxyfurost-5-en-3-yl 6-deoxy-α-L-mannopyranosyl-(1->2)-[6-deoxy-α-L-mannopyranosyl-(1->4)]-β-D-glucopyranoside, beta-D-glucopyranoside, (3beta,22alpha,25R)-26-(beta-D-glucopyranosyloxy)-22-hydroxyfurost-5-en-3-yl o-6-deoxy-alpha-l-mannopyranosyl-(1->2)-o-[6-deoxy-alpha-l-mannopyranosyl-(1->4)]-

INCI: PROTODIOSCIN

Protodioscin (CAS 55056-80-9) is a cosmetic cosmetic ingredient functioning as Skin conditioning (steroidal saponin from *Tribulus terrestris*). EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.

View industrial chemical safety profile for CAS 55056-80-9 →

Auto-generated CPSR Part A draft with source citations
Function
Skin conditioning (steroidal saponin from *Tribulus terrestris*)
Safety Rating
POOR

Chemistry & Identifiers

Formula
C51H84O22
MW
1049.2 g/mol
PubChem CID
441891
IUPAC Name
(2S,3R,4R,5R,6S)-2-[(2R,3S,4S,5R,6R)-4-hydroxy-2-(hydroxymethyl)-6-[[(1S,2S,4S,6R,7S,8R,9S,12S,13R,16S)-6-hydroxy-7,9,13-trimethyl-6-[(3R)-3-methyl-4-[(2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxybutyl]-5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icos-18-en-16-yl]oxy]-5-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxyoxan-3-yl]oxy-6-methyloxane-3,4,5-triol
InChIKey
LVTJOONKWUXEFR-UEZXSUPNSA-N

Regulatory Status

EU EU Status permitted
US US Status permitted
US Notes Not specifically listed for cosmetic use

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Softener and conditioner

Expert Verdict

Expert safety assessment and concern-level summary for Protodioscin.

Known Synonyms

(3β,22R,25R)-26-(β-D-Glucopyranosyloxy)-22-hydroxyfurost-5-en-3-yl 6-deoxy-α-L-mannopyranosyl-(1->2)-[6-deoxy-α-L-mannopyranosyl-(1->4)]-β-D-glucopyranoside beta-D-glucopyranoside, (3beta,22alpha,25R)-26-(beta-D-glucopyranosyloxy)-22-hydroxyfurost-5-en-3-yl o-6-deoxy-alpha-l-mannopyranosyl-(1->2)-o-[6-deoxy-alpha-l-mannopyranosyl-(1->4)]-

Chemical Function

Softener and conditioner

Cross-Vertical Safety Context

Same-CAS public records found in pharmaceutical data.

SOURCE ChEMBL / DrugCentral / FAERS DB_PHARMA CAS match

Pharmaceutical Data

Same-CAS rows from the pharmaceutical spoke database.

ChEMBL ID
CHEMBL4782480
View full pharmaceutical profile →

Frequently Asked Questions

Is Protodioscin safe in cosmetics?

Protodioscin has a safety rating of "POOR" in our database. EU status: permitted. US status: permitted.

Is Protodioscin allowed in the EU?

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

What does Protodioscin do in cosmetics?

Protodioscin functions as: Skin conditioning (steroidal saponin from *Tribulus terrestris*). It is classified as a cosmetic ingredient in our database. CAS number: 55056-80-9.

Is Protodioscin used outside cosmetics?

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

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