3-Methylxanthine

Modify Date: 2026-07-02 00:00:44

3-Methylxanthine Structure
3-Methylxanthine structure
Common Name 3-Methylxanthine
CAS Number 1076-22-8 Molecular Weight 166.137
Density 1.5±0.1 g/cm3 Boiling Point 322.4ºC at 760 mmHg
Molecular Formula C6H6N4O2 Melting Point >300 °C(lit.)
MSDS N/A Flash Point 148.8ºC
Symbol GHS07
GHS07
Signal Word Warning

 Use of 3-Methylxanthine


3-Methylxanthine, a xanthine derivative, is a cyclic guanosine monophosphate (GMP) inhibitor, with an IC50 of 920 μM on guinea-pig isolated trachealis muscle.

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name 3-methyl-7H-xanthine
Synonym More Synonyms

 3-Methylxanthine Biological Activity

This table contains bioactivity, target information and biological‑assay experimental data of this compound.

Description 3-Methylxanthine, a xanthine derivative, is a cyclic guanosine monophosphate (GMP) inhibitor, with an IC50 of 920 μM on guinea-pig isolated trachealis muscle.
Related Catalog
Target

GMP:920 μM (IC50)

Human Endogenous Metabolite

References

[1]. Tanaka H, et al. Inhibition of cyclic GMP phosphodiesterase by xanthine derivatives relaxes guinea-pig trachealis smooth muscle. Clin Exp Pharmacol Physiol. 1991 Mar;18(3):163-8.

[2]. Yamamoto K, et al. Neurotoxic convulsions induced by theophylline and its metabolites in mice. Biol Pharm Bull. 1996 Jun;19(6):869-72.

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.5±0.1 g/cm3
Boiling Point 322.4ºC at 760 mmHg
Melting Point >300 °C(lit.)
Molecular Formula C6H6N4O2
Molecular Weight 166.137
Flash Point 148.8ºC
Exact Mass 166.049072
PSA 83.54000
LogP -0.79
Vapour Pressure 2.23E-05mmHg at 25°C
Index of Refraction 1.627
InChIKey GMSNIKWWOQHZGF-UHFFFAOYSA-N
SMILES Cn1c(=O)[nH]c(=O)c2[nH]cnc21
Storage condition 2-8°C

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
ZD8750000
CHEMICAL NAME :
Xanthine, 3-methyl-
CAS REGISTRY NUMBER :
1076-22-8
LAST UPDATED :
199706
DATA ITEMS CITED :
6
MOLECULAR FORMULA :
C6-H6-N4-O2
MOLECULAR WEIGHT :
166.16
WISWESSER LINE NOTATION :
T56 BM DN FNVMVJ F1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD - Lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. (Washington, DC) Volume(issue)/page/year: 5,23,1953
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
894 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
EJMCA5 European Journal of Medicinal Chemistry--Chimie Therapeutique. (Editions Scientifiques Elsevier, 29 rue Buffon, F-75005, Paris, France) V.9- 1974- Volume(issue)/page/year: 25,653,1990
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
300 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AEXPBL Archiv fuer Experimentelle Pathologie und Pharmakologie. (Leipzig, Ger. Dem. Rep.) V.1-109, 1873-1925. For publisher information, see NSAPCC. Volume(issue)/page/year: 43,305,1900
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AEXPBL Archiv fuer Experimentelle Pathologie und Pharmakologie. (Leipzig, Ger. Dem. Rep.) V.1-109, 1873-1925. For publisher information, see NSAPCC. Volume(issue)/page/year: 43,305,1900
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Unreported
SPECIES OBSERVED :
Amphibian - frog
DOSE/DURATION :
20 mg/kg
TOXIC EFFECTS :
Peripheral Nerve and Sensation - spastic paralysis with or without sensory change Behavioral - changes in motor activity (specific assay) Lungs, Thorax, or Respiration - other changes
REFERENCE :
AEXPBL Archiv fuer Experimentelle Pathologie und Pharmakologie. (Leipzig, Ger. Dem. Rep.) V.1-109, 1873-1925. For publisher information, see NSAPCC. Volume(issue)/page/year: 43,305,1900 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1600 mg/kg/16D-I
TOXIC EFFECTS :
Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Kidney, Ureter, Bladder - hematuria Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
REFERENCE :
JJATDK JAT, Journal of Applied Toxicology. (John Wiley & Sons Ltd., Baffins Lane, Chichester, W. Sussex PO19 1UD, UK) V.1- 1981- Volume(issue)/page/year: 4,304,1984

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H302
Precautionary Statements P301 + P312 + P330
Hazard Codes Xn:Harmful;
Risk Phrases R22
Safety Phrases S22-S24/25
RIDADR NONH for all modes of transport
WGK Germany 1
RTECS ZD8750000
HS Code 2942000000

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 2942000000

 3-MethylxanthineBioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Inhibition of c-AMP phosphodiesterase activity in guinea pig tracheal muscle
Source: ChEMBL
Target: cAMP-specific 3',5'-cyclic phosphodiesterase 4A
External Id: CHEMBL821509
Name: ERK5 transcriptional activity HTS
Source: 24565
Target: N/A
External Id: ERK5 transcriptional activity-HTS
Name: qHTS for Inhibitors of human tyrosyl-DNA phosphodiesterase 1 (TDP1): qHTS in cells in...
Source: NCGC
Target: TDP1 protein [Homo sapiens]
External Id: TDP1100
Name: qHTS for Stage-Specific Inhibitors of Vaccinia Orthopoxvirus: mCherry Reporter Primar...
Source: NCGC
Target: 67.9K protein [Vaccinia virus]
External Id: Vaccinia-p2mCherry
Name: qHTS for Inhibitors of human tyrosyl-DNA phosphodiesterase 1 (TDP1): qHTS in cells in...
Source: NCGC
Target: TDP1 protein [Homo sapiens]
External Id: TDP1101
Name: Spectrum HTS for Inhibitors of Aerobactin Synthetase IucA
Source: 23265
Target: IucA Synthetase from hypervirulent Klebsiella pneumoniae hvKP1
External Id: IucA Pilot Assay Spectrum Library
Name: Positive chronotropic effect on isolated guinea pig right atrium (heart stimulation).
Source: ChEMBL
Target: Adenosine receptor A1
External Id: CHEMBL686052
Name: Inhibition of sodium fluorescein uptake in OATP1B3-transfected CHO cells at an equimo...
Source: ChEMBL
Target: Solute carrier organic anion transporter family member 1B3
External Id: CHEMBL3039491
Name: Inhibition of the stimulation by 5'-(N-ethylcarbamoyl) adenosine of adenyl cyclase vi...
Source: ChEMBL
Target: Adenosine receptor A2a
External Id: CHEMBL642334
Name: The chemical genetic matrix (CGM) dataset as reported in Wildenhain et al. (2015) Pre...
Source: 11924
Target: N/A
External Id: CGM data for Cell Systems paper Dec 2015
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 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

6-Hydroxy-3-methyl-3,9-dihydro-2H-purin-2-one
3-METHYL XANTHINE
3-METHYL-2,3,6,9-TETRAHYDRO-1H-PURINE-2,6-DIONE
3,7-dihydro-3-methyl-1h-purine-6-dione
3-methyl-7H-purine-2,6-dione
2,6-Dihydroxy-3-methylpurine
3-Methyl-3,7-dihydro-1H-purine-2,6-dione
3,7-DIHYDRO-3-METHYL-1H-PURINE-2,6-DIONE
3-Methyl-1H-purine-2,6(3H,7H)-dione
EINECS 214-058-1
MFCD00005580
3-Methylxanthine
oxoguanine

 3-Methylxanthine | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the safety information for 3-methyl-7H-xanthine?
A: Safety information for 3-methyl-7H-xanthine: S22-S24/25.
Q: What is the molecular formula of 3-methyl-7H-xanthine?
A: Molecular formula of 3-methyl-7H-xanthine is C6H6N4O2.
Q: What is the polar surface area (PSA) of 3-methyl-7H-xanthine?
A: Polar surface area (PSA) of 3-methyl-7H-xanthine is 83.54000.
Q: What is the LogP of 3-methyl-7H-xanthine?
A: LogP of 3-methyl-7H-xanthine is -0.79.
Q: What are the uses of 3-methyl-7H-xanthine?
A: Main uses of 3-methyl-7H-xanthine: 3-Methylxanthine, a xanthine derivative, is a cyclic guanosine monophosphate (GMP) inhibitor, with an IC50 of 920 μM on guinea-pig isolated trachealis muscle.
Q: What is the SMILES notation of 3-methyl-7H-xanthine?
A: SMILES notation of 3-methyl-7H-xanthine is Cn1c(=O)[nH]c(=O)c2[nH]cnc21.
Q: What is the CAS number of 3-methyl-7H-xanthine?
A: CAS number of 3-methyl-7H-xanthine is 1076-22-8.
Q: What is the English name of 3-methyl-7H-xanthine?
A: The English name of 3-methyl-7H-xanthine is 3-methyl-7H-xanthine.
Q: What is the InChIKey of 3-methyl-7H-xanthine?
A: InChIKey of 3-methyl-7H-xanthine is GMSNIKWWOQHZGF-UHFFFAOYSA-N.
Q: What is the boiling point of 3-methyl-7H-xanthine?
A: Boiling point of 3-methyl-7H-xanthine is 322.4ºC at 760 mmHg.

 3-Methylxanthinefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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