Skip to main content
InventoryRef 3417615/10/2010

GUANOSINE

Guanosine

GUANOSINE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

Chemical identity and properties

PubChem 2D chemical structure for CAS 118-00-3
CAS 118-00-3PubChem CID 135398635

Guanosine

Guanosine is a purine nucleoside in which guanine is attached to ribofuranose via a beta-N9-glycosidic bond. It has a role as a fundamental metabolite. It is a purines D-ribonucleoside and a member of guanosines. It is functionally related to a guanine. ChEBI

IUPAC name
2-amino-9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-1H-purin-6-one
Molecular formula
C10H13N5O5
Molecular weight
283.24 g/mol
Exact mass
283.09166853 Da
XLogP3
-1.9
Topological polar surface area
155.0 Ų
Hydrogen-bond donors
5
Hydrogen-bond acceptors
7
Covalent units
1
Defined stereocentres
4

Also known as

vernineguanine riboside2-Amino-1,9-dihydro-9-beta-D-ribofuranosyl-6H-purin-6-oneGuanosinGuanine-9-beta-D-ribofuranoside2(3H)-Imino-9-beta-D-ribofuranosyl-9H-purin-6(1H)-one9-beta-D-ribofuranosyl-guanineCHEBI:16750
16 more reported names
NSC-199942-AMINO-9-[(2R,3R,4S,5R)-3,4-DIHYDROXY-5-(HYDROXYMETHYL)OXOLAN-2-YL]-6,9-DIHYDRO-1H-PURIN-6-ONE2-amino-9-beta-D-ribofuranosyl-1,9-dihydro-6H-purin-6-one2-amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl)-1H-purin-6-one2-amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl)-6,9-dihydro-1H-purin-6-oneRefChem:58752-Amino-9-beta-D-ribofuranosyl-9H-purine-6(1H)-one2-amino-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl)-3H-purin-6-one204-227-8GuanozinUSAF CB-11Inosine, 2-amino-Vernine (VAN)9-beta-D-RibofuranosylguanineRibofuranoside, guanine-9, beta-D-beta-D-Ribofuranoside, guanine-9
External database identifiers

Evidence from additional scientific databases

NIH PubChem PUG-View
Exact identifier match135398635

Attributed physical-property, hazard, environmental and use annotations.

  • Note: This chemical does not meet GHS hazard criteria for 11.8% (10 of 85) of reports. Source: European Chemicals Agency (ECHA)
  • Signal: Danger Source: European Chemicals Agency (ECHA)
  • GHS Hazard Statements: H301 (87.1%): Toxic if swallowed [Danger Acute toxicity, oral] Source: European Chemicals Agency (ECHA)
  • Precautionary Statement Codes: P264, P270, P301+P316, P321, P330, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
  • ECHA C&L Notifications Summary: Aggregated GHS information provided per 85 reports by companies from 5 notifications to the ECHA C&L Inventory.; Reported as not meeting GHS hazard criteria per 10 of 85 reports by companies.; There are 3 notifications provided by 75 of 85 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status
SourceResultChecked
NIH PubChem PUG-ViewExact match2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for GUANOSINE

INCI name

GUANOSINE

Description

Guanosine

Record provenance

Inventory reference
34176
Imported identity
GUANOSINE
Source update
15/10/2010
European Commission CosIng source notes

Key data

Restriction
Function
OPACIFYING
Reducing transparency or translucency of cosmetics.
SKIN CONDITIONING
Maintaining the skin in good condition.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

Ingredients with overlapping formulation functions

Additional official and scientific sources

11 external databases to check this identity in

How GUANOSINE appears in the CosIng inventory

The CosIng inventory lists GUANOSINE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

GUANOSINE is also tagged with 2 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

GUANOSINE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, GUANOSINE carries the following function designation(s):

CAS 118-00-3 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

Use the INCI Checker to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Source note for GUANOSINE

This page reproduces the CosIng inventory entry for GUANOSINE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research GUANOSINE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

Tools & next steps

Check your formula

Scan a full INCI list to detect GUANOSINE and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to GUANOSINE, its identifiers or nearby name variants.

Search