6-Methoxy-N2- methyl-2,3- pyridinediamine hydrochloride and dihydrochloride salt 6-Methoxy-2-Methylamino-3- Aminopyridine HCl CAS No. 90817-34-8 / 83732-72-3
ASEAN Annex III lists this record among substances allowed only under restrictions and conditions. Member-state transition rules and deviations still require local verification.
Regulatory decision and full conditions
- Status
- Restricted
- Legal role
- Binding rule
- Regulatory summary
- ASEAN Annex III lists this record among substances allowed only under restrictions and conditions. Member-state transition rules and deviations still require local verification.
- Conditions and restrictions
- a) Hair dye substance in oxidative hair dye products b) Hair dye substance in non-oxidative hair Use for dyeing eyelashes and eyebrows is not permitted. · b) 0.68 as free base (1.0% as dihydrochloride) · For (a): After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 0.68% calculated as free base (1,0 % as dihydrochloride). For (a) and (b): • Do not use with nitrosating agents • Maximum nitrosamine content: 50 μg /kg(21) • Keep in nitrite- free containers The free base and salts of this hair dye ingredient, unless prohibited in Annex II, are permitted for use. The direction for use “wear suitable gloves” must be included in label or leaflet text. · (a) To be printed on the label: The mixing ratio. “Hair colorants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16 Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irritated and damaged scalp, — you have ever experienced any reaction after colouring your hair, — you have experienced a reaction to a temporary ‘black henna’ tattoo in the past.” Do not use to dye eyelashes or eyebrows b) Can cause allergic reaction Do not use to dye eyelashes or eyebrows
Substance identity
- Official source name
- 6-Methoxy-N2- methyl-2,3- pyridinediamine hydrochloride and dihydrochloride salt 6-Methoxy-2-Methylamino-3- Aminopyridine HCl CAS No. 90817-34-8 / 83732-72-3
- CAS
- 90817-34-8; 83732-72-3
- EC
- Not supplied in this source row
- Identity mapping
- Exact CAS: 90817-34-8
- Linked ingredient
- 6-METHOXY-2-METHYLAMINO-3-AMINOPYRIDINE HCL
Linked CosIng identity data
Names and aliases
CosIng description: 2,3-Pyridinediamine, 6-Methoxy-N2-Methyl
EU inventory restriction note: III/203
Recorded cosmetic function: HAIR DYEING
Function pages:HAIR DYEING
View the complete ingredient profileCross-market snapshot for this identity
Exact linked records currently present in this site. An absent market means no imported exact match, not permission to use the substance.
European Union
1 linked record · 1 with specific conditions
Open supporting recordGreat Britain
1 linked record · 1 with specific conditions
Open supporting recordNew Zealand
2 linked records · 2 with specific conditions
Open supporting recordASEAN
Current record1 linked record · 1 with specific conditions
Open supporting recordSouth Korea
2 linked records · 2 with specific conditions
Open supporting recordIndia
1 linked record · 1 with specific conditions
Open supporting recordSaudi Arabia
1 linked record
Open supporting recordVerified chemistry for CAS 83732-72-3
6-Methoxy-2-methylamino-3-aminopyridine dihydrochloride
- IUPAC name
- 6-methoxy-2-N-methylpyridine-2,3-diamine;dihydrochloride
- Molecular formula
- C7H13Cl2N3O
- Molecular weight
- 226.10 g/mol
- Exact mass
- 225.0435674 Da
- Monoisotopic mass
- 225.0435674 Da
- Topological polar surface area
- 60.2 Ų
- Molecular complexity
- 120.0
- Formal charge
- 0
- Hydrogen-bond donors
- 4
- Hydrogen-bond acceptors
- 4
- Rotatable bonds
- 2
- Heavy atoms
- 13
- Covalent units
- 3
Names and synonyms reported to PubChem
16 more reported names
External database identifiers
- EPA DTXSID:DTXSID80879796
Advanced structure statistics
- Defined atom stereocentres
- 0
- Undefined atom stereocentres
- 0
- Defined bond stereocentres
- 0
- Undefined bond stereocentres
- 0
- 3D conformers
- 0
Machine-readable structure identifiers
- SMILES
CNC1=C(C=CC(=N1)OC)N.Cl.Cl- InChI
InChI=1S/C7H11N3O.2ClH/c1-9-7-5(8)3-4-6(10-7)11-2;;/h3-4H,8H2,1-2H3,(H,9,10);2*1H- InChIKey
GYLCRBBRGGGHBS-UHFFFAOYSA-N
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Verified chemistry for CAS 90817-34-8
6-methoxy-2-N-methylpyridine-2,3-diamine
- IUPAC name
- 6-methoxy-2-N-methylpyridine-2,3-diamine
- Molecular formula
- C7H11N3O
- Molecular weight
- 153.18 g/mol
- Exact mass
- 153.090211983 Da
- Monoisotopic mass
- 153.090211983 Da
- XLogP3
- 0.8
- Topological polar surface area
- 60.2 Ų
- Molecular complexity
- 120.0
- Formal charge
- 0
- Hydrogen-bond donors
- 2
- Hydrogen-bond acceptors
- 4
- Rotatable bonds
- 2
- Heavy atoms
- 11
- Covalent units
- 1
Names and synonyms reported to PubChem
3 more reported names
External database identifiers
- EPA DTXSID:DTXSID80420888
- PubMed:19338602
Advanced structure statistics
- Defined atom stereocentres
- 0
- Undefined atom stereocentres
- 0
- Defined bond stereocentres
- 0
- Undefined bond stereocentres
- 0
- 3D pharmacophore features
- 5
- 3D rings
- 1
- 3D hydrophobes
- 0
- 3D acceptor features
- 0
- 3D donor features
- 2
- 3D anionic centres
- 0
- 3D cationic centres
- 2
- 3D conformers
- 6
- Effective 3D rotors
- 2.0
Machine-readable structure identifiers
- SMILES
CNC1=C(C=CC(=N1)OC)N- InChI
InChI=1S/C7H11N3O/c1-9-7-5(8)3-4-6(10-7)11-2/h3-4H,8H2,1-2H3,(H,9,10)- InChIKey
ATCBPVDYYNJHSG-UHFFFAOYSA-N
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Official source and provenance
- Registered source
- ASEAN Cosmetic Directive annexes
- Source reference
- ASEAN Annex III, reference 203
- Source record ID
III-203- Source version
- 2026-1
- Source language
- English
- Translation status
- Original is English
- Source updated
- 2026-06-22
- Snapshot checked
- 2026-08-30 04:44 UTC
- Validation method
- pdfplumber ruled-table extraction with per-annex reviewed counts
- SHA-256
ffad59f6c01a92c82042c54203ee14969425c2a82bd04c2f4012ff82513e69f1
Registered dataset notes
- Dataset coverage
- Banned, restricted and positive-list substances under the harmonised ASEAN framework
- Authority note
- Regional directive; member-state transitions and deviations still require local verification
How this record fits the market dataset
Status distribution
Condition text is present on 462 of 2224 current records. An empty condition field is interpreted according to the record type above; it is never converted into an unrestricted-use claim.
ASEAN market context
Complete regional annex dataset
Coverage version: ASEAN Cosmetic Directive annexes 2026-1, 22 June 2026
Annexes II, III, IV, VI and VII covering prohibited, restricted and positive-list substances.
Verification checklist
- Search all ACD annexes by name and identifiers.
- Apply product type, maximum level and warning conditions.
- Confirm the target member state's adoption and transition date.
- Complete the local notification and responsible-company requirements.
Official market sources
- ASEAN Cosmetic Directive annexesRegional directive; member-state transitions and deviations still require local verification
Verification workflow and record completeness
Before using this result in a compliance decision
- Confirm that “6-Methoxy-N2- methyl-2,3- pyridinediamine hydrochloride and dihydrochloride salt 6-Methoxy-2-Methylamino-3- Aminopyridine HCl CAS No. 90817-34-8 / 83732-72-3” and every CAS/EC identifier refer to the material in your supplier specification.
- Search all ACD annexes by name and identifiers.
- Apply product type, maximum level and warning conditions.
- Confirm the target member state's adoption and transition date.
- Complete the local notification and responsible-company requirements.
- Document the source version and recheck the regulator before manufacture, notification or market placement.
Fields available in this record
- Official substance nameAvailable
- CASAvailable
- ECNot supplied
- Separate condition textAvailable
- Effective dateNot supplied
- Snapshot hash and methodAvailable
Questions this page answers
Stable citation
6-Methoxy-N2- methyl-2,3- pyridinediamine hydrochloride and dihydrochloride salt 6-Methoxy-2-Methylamino-3- Aminopyridine HCl CAS No. 90817-34-8 / 83732-72-3. ASEAN Annex III, reference 203. ASEAN. Source version 2026-1. CosIng Checker regulatory record: https://cosingchecker.com/regulations/asean/records/3967/
Cite the regulator as the legal authority. This page is a structured evidence index and verification aid, not a substitute for the official text or professional legal assessment.
Interpretation and limits for ASEAN
This substance is not unrestricted: cosmetic use is subject to the conditions in the cited official record.
Check product type, body area, concentration, purity and warning requirements before deciding whether a formulation is compliant.
How to interpret the legal role
The cited row forms part of a binding rule or legally incorporated list for this market.
Evidence on this page
- Recorded outcome: Restricted
- Legal role: Binding rule
- Source version: 2026-1
What it does not prove
Regional annex coverage does not replace member-state implementation dates, notifications or national deviations.
Further authoritative substance research
These sources can add identity, safety, exposure or hazard context. A link is not evidence that the database contains this exact substance, and none of these sources overrides the market decision above.
Cosmetic Ingredient Review safety assessments
Expert Panel conclusions, assessed ingredient groups, use conditions, dates and report documents
Independent expert review considered by FDA; not a government approval or binding market rule
Research this identity at the sourceFDA Global Substance Registration System
UNII identifiers, preferred names, substance types, codes and public substance relationships
Identity registry only; UNII availability does not imply FDA review or approval
Research this identity at the sourceILO/WHO International Chemical Safety Cards
Hazards, symptoms, first aid, storage, incompatibilities and physical properties for covered chemicals
International occupational chemical-safety reference; not cosmetic-use approval
Research this identity at the sourceJapan NITE-CHRIP
Chemical identity, Japanese and foreign legal lists, GHS hazards and exposure-related information
Chemical-management evidence; cosmetic status remains governed by the applicable MHLW standard and market rules
Research this identity at the sourceNIOSH Pocket Guide to Chemical Hazards
REL, PEL, IDLH, properties, exposure routes, symptoms, target organs, first aid and measurement methods for covered workplace chemicals
US occupational-health guidance and limits; not a cosmetic ingredient decision
Research this identity at the sourceOECD eChemPortal
Gateway to authority-owned physical-property, fate, ecotoxicity, toxicity, exposure and GHS records
Discovery gateway; each linked authority remains responsible for its data
Research this identity at the sourceUS EPA CompTox CTX APIs
API key required for importDTXSID identity, experimental and predicted properties, toxicity, bioactivity, exposure and environmental data
Scientific and computational evidence; predictions must remain labelled and do not determine cosmetic legality
Research this identity at the source