Basic information
- CAS
1076-22-8- Standard SMILES
Cn1c(=O)[nH]c(=O)c2[nH]cnc21- InChIKey
GMSNIKWWOQHZGF-UHFFFAOYSA-N- Molecular formula
- C6H6N4O2
- Average molar mass
- 166.14 g/mol
- Monoisotopic mass
- 166.04907543
Overview
3-methyl-9H-xanthine is a 3-methylxanthine tautomer where the imidazole proton is located at the 9-position. It has a role as a metabolite. It is a tautomer of a 3-methyl-7H-xanthine.
Names & identifiers
- Preferred name
- 3-Methylxanthine
- IUPAC
- 3-methyl-7H-purine-2,6-dione
- English name
- 3-Methylxanthine
- Molecular formula
- C6H6N4O2
- Molecular weight
- 166.14
Names & synonyms
Show more names
Database identifiers
- CAS
1076-22-8- PubChem CID
- 70639
- DTXSID
DTXSID90148107- ChEMBL
CHEMBL619- ChEBI
CHEBI:62207- UNII
- WS6X982OEC
- EC Number
- 214-058-1
- Nikkaji
- J3.360J、J492.513K
Properties
Computed structural properties
- XLogP
- -0.7
- Topological polar surface area
- 78.1 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 3
- Rotatable bonds
- 0
- Heavy atoms
- 12
- Formal charge
- 0
- Complexity
- 242
Experimental & physicochemical properties
LogP
-0.50
-0.72
Collision Cross Section
127.59 Ų [M+H]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]
124.48 Ų [M-H]- [CCS Type: DT; Method: single field calibrated with Agilent tune mix (Agilent)]
127.9 Ų [M+H]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]
Physicochemical properties
- Melting point
- 300 °C · >300 °C (lit.)
- Boiling point
- 294.33 °C · 294.33°C (rough estimate)
- Density
- 1.4434 · 1.4434 (rough estimate)
- refractive index
- 1.67 · 1.6700 (estimate)
- storage temp.
- 2 · 2-8°C
- solubility
- DMSO (Slightly, Heated), Methanol (Slightly)
- form
- Solid
- pka
- 1 · pK1:8.10;pK2:11.3 (25°C)
- color
- White to Pale Beige
- Water Solubility
- Insoluble in water.
- BRN
- 180944 · 180944
- InChI
- InChI=1S/C6H6N4O2/c1-10-4-3(7-2-8-4)5(11)9-6(10)12/h2H,1H3,(H,7,8)(H,9,11,12)
- InChIKey
- GMSNIKWWOQHZGF-UHFFFAOYSA-N
- SMILES
- N1C2=C(N(C)C(=O)NC2=O)NC=1
- CAS DataBase Reference
- 1076 · 1076-22-8(CAS DataBase Reference)
- FDA UNII
- 6 X982OEC · WS6X982OEC
- UNSPSC Code
- 41116107 · 41116107
- NACRES
- 24 · NA.24
- Symbol(GHS)
- 7 · GHS07
- Signal word
- Warning
- Hazard statements
- 302 · H302
- Precautionary statements
- 301 · P301+P312+P330
- PPE
- 95 · dust mask type N95 (US), Eyeshields, Gloves
- Hazard Codes
- Xn,T+
- Risk Statements
- 22 · 22-26/27/28
- Safety Statements
- 22 · 22-24/25
- WGK Germany
- 1 · 1
- RTECS
- 8750000 · ZD8750000
- HS Code
- 29335990 · 29335990
- Storage Class
- 11 · 11 - Combustible Solids
- Toxicity
- 50 intraperitoneal · LD50 intraperitoneal in mouse: 894mg/kg
- REACH Registrations
- Active
Safety & regulation
GHS classification
GHS Classification
Warning
H302 (98.1%): Harmful if swallowed [Warning Acute toxicity, oral]
P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 53 reports by companies from 4 notifications to the ECHA C&L Inventory.
Hazard information
Safety data
- PPE
- dust mask type N95 (US), Eyeshields, Gloves
- wgk
- 1
- rtecs
- ZD8750000
- hs_code
- 29335990
- Toxicity
- LD50 intraperitoneal in mouse: 894mg/kg
- risk_code
- 22-26/27/28
- Signal word
- Warning
- Symbol(GHS)
- GHS07
- hazard_code
- Xn,T+
- safety_code
- 22-24/25
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H302
- REACH Registrations
- Active
- Precautionary statements
- P301+P312+P330
Chemistry & industry
Pharmacology
Applications
Description3-Methylxanthine is one of the metabolites of theophylline. After oral intake, approximately 36% is excreted in the urine as 3-methylxanthine, 40% as 1,3-dimethyluric acid and 17% as 1-methyluric acid. 3-methylxanthine (3MX) has been assessed as an adenosine antagonist and produces the same maximal relaxation of guinea pig tracheal muscle as does. 3MX is also used to examine conformational heterogeneity in RNA aptamers and riboswitches[1-2].
Uses3-Methylxanthine is a Xanthine derivative with diuretic, cardiac stimulant and smooth muscle relaxant activities; isomeric with theobromine.They can also act as Bronchodilator.
General Description3-Methylxanthine, a metabolite of theophylline, was quantitated in rat plasma by a sensitive LC-MS/MS method.
Upstream & downstream products
Upstream raw materials
Suppliers100 total
Additional notes
DefinitionChEBI: 3-methyl-9H-xanthine is a 3-methylxanthine tautomer where the imidazole proton is located at the 9-position. It has a role as a metabolite. It is a tautomer of a 3-methyl-7H-xanthine.
Related reactions
Compound notes
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