Guanine is a 2-aminopurine carrying a 6-oxo substituent.
Definition
US FDA substance register · UNII 5Z93L87A1R · registered name Guanine · single chemical substance
Guanine is a 2-aminopurine carrying a 6-oxo substituent. It has a role as a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a human metabolite and an algal metabolite. It is a member of 2-aminopurines, an oxopurine and a purine nucleobase. It derives from a hydride of a 9H-purine.
Source: PubChem
Guanine is a natural purine that conforms to the formula:
Cosmetic roles
Safety & regulatory references
- Restricted
- ASEAN · China · European Union · South Korea · Taiwan
- Allowed colourant
- ASEAN · Taiwan
Source: MFDS (Korea) cosmetic regulatory information · ASEAN Cosmetic Directive · Taiwan FDA cosmetic ingredients · US FDA color additives · US FDA prohibited and restricted ingredients
Argentina · Brazil
- Field of application and/or use : Dye Substances allowed for all kinds of products.
United States
- Eye Area : Yes
- Generally (Includes Lipsticks) : Yes
- External Use : Yes
Source: MFDS (Korea) cosmetic regulatory information
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
EU Cosmetics Regulation, Annex IV (allowed colourants), entry 113
Source: EU allowed colourants (Annex IV)
Restriction IV/113
Source: EU CosIng ingredient list
Restriction IV/113 · Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name グアニン: 本品は、次の化学式で表される天然のプリン塩基である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 73-40-5
- EC No.EU chemical inventory number
- 200-799-8
- DTXSIDUS EPA chemical ID
- DTXSID9052476
- DTXCIDUS EPA compound ID
- DTXCID6031049
- IUPAC
- 2-Amino-1,9-dihydro-6H-purin-6-one
- Molecular formula
- C5H5N5O
- Molecular weight
- 151.129 g/mol
Measured properties
- Appearance
- solid
- Colour
- white
- Vapour pressure
- 0.000000000096 ㎜Hg (@ 25 ℃, est.)
- Water solubility
- 2080 ㎎/ℓ (@ 37 ℃)
- Vapour density
- 5.22
- Relative density
- 1.67
- n-Octanol/water partition coefficient (Kow)
- -0.91
- Decomposition temperature
- 360 ℃
- Molecular weight
- 151.13
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: KOSHA safety data sheets (Korea)
What products actually use it for
What the 9 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Dye7
- Opacifer2
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
1 skin studies and 1 eye studies are on record.
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 2 studies
- Category 6.3A (Category 2)
Skin Irritation · Read Across - Category 6.4A (Category 2A)
Eye Irritation · Read Across
Source: US EPA CompTox dashboard
Related literature
Linked databases 26
- ASEAN Cosmetic Directive
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- ChEMBL
- China inventory of existing ingredients (IECIC)
- EU allowed colourants (Annex IV)
- EU CosIng ingredient list 2 3
- JCIA labelling names (Japan)
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register 2
- MFDS (Korea) cosmetic regulatory information 2 3 4
- NIST Chemistry WebBook
- PubChem
- Taiwan FDA cosmetic ingredients
- Tlooto literature search 2 3 4 5
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA color additives
- US FDA prohibited and restricted ingredients
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata
- Wikipedia · Korean · English · Japanese · Chinese