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3-Methylxanthine

CAS No.
1076-22-8
Chemical Name:
3-Methylxanthine
Synonyms
3-METHYLXANTHINE;3-Methyl-3,7-dihydro-1H-purine-2,6-dione;3-Methylxantine;Linaint-E;AKOS NCG-0058;3-Methy-xanthine;3-methyl-xanthin;Zotepine Impurity6;3-Methylxanthine>3-methyl-7H-xanthine
CBNumber:
CB6349064
Molecular Formula:
C6H6N4O2
Molecular Weight:
166.14
MDL Number:
MFCD00005580
MOL File:
1076-22-8.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 06:09:06
Product description Number Pack Size Price
3-Methylxanthine 98% 222526 1g $458
Theophylline Related Compound B United States Pharmacopeia (USP) Reference Standard 1653026 25mg $1390
3-Methylxanthine >98.0%(HPLC)(T) M2073 5g $36
3-Methylxanthine >98.0%(HPLC)(T) M2073 25g $117
3-Methylxanthine ≥98% 34288 5g $41
More product size

3-Methylxanthine Properties

Melting point >300 °C (lit.)
Boiling point 294.33°C (rough estimate)
Density 1.4434 (rough estimate)
refractive index 1.6700 (estimate)
storage temp. 2-8°C
solubility DMSO (Slightly, Heated), Methanol (Slightly)
form Solid
pka pK1:8.10;pK2:11.3 (25°C)
color White to Pale Beige
Water Solubility Insoluble in water.
BRN 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 1076-22-8(CAS DataBase Reference)
FDA UNII WS6X982OEC
UNSPSC Code 41116107
NACRES NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P301+P312+P330
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xn,T+
Risk Statements  22-26/27/28
Safety Statements  22-24/25
WGK Germany  1
RTECS  ZD8750000
HS Code  29335990
Storage Class 11 - Combustible Solids
Toxicity LD50 intraperitoneal in mouse: 894mg/kg
REACH Registrations Active
NFPA 704
1
2 0

3-Methylxanthine price More Price(55)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 222526 3-Methylxanthine 98% 1076-22-8 1g $458 2026-04-30 Buy
Sigma-Aldrich 1653026 Theophylline Related Compound B United States Pharmacopeia (USP) Reference Standard 1076-22-8 25mg $1390 2026-04-30 Buy
TCI Chemical M2073 3-Methylxanthine >98.0%(HPLC)(T) 1076-22-8 5g $36 2026-04-30 Buy
TCI Chemical M2073 3-Methylxanthine >98.0%(HPLC)(T) 1076-22-8 25g $117 2026-04-30 Buy
Cayman Chemical 34288 3-Methylxanthine ≥98% 1076-22-8 5g $41 2026-04-30 Buy
Product number Packaging Price Buy
222526 1g $458 Buy
1653026 25mg $1390 Buy
M2073 5g $36 Buy
M2073 25g $117 Buy
34288 5g $41 Buy

3-Methylxanthine Chemical Properties,Uses,Production

Description

3-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].

Chemical Properties

Light yellow powder

Uses

3-Methylxanthine is a Xanthine derivative with diuretic, cardiac stimulant and smooth muscle relaxant activities; isomeric with theobromine.They can also act as Bronchodilator.

Definition

ChEBI: 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.

Biosynthesis

As the primary intermediate of theobromine degradation, 3-methylxanthine might be degraded by A. tamarii PT-7 and other candidate isolates in the liquid culture. The accumulation of 3-methylxanthine increased along with theobromine degradation since it was detected in the liquid culture after cultivation for 24h. Over 6 days of cultivation of A. sydowii PT-2, 3-methylxanthine was produced and increased significantly (p<0.05) with an increasing initial theobromine concentration, respectively, showing a linear relationship between theobromine degradation and 3-methylxanthine accumulation[3].

General Description

3-Methylxanthine, a metabolite of theophylline, was quantitated in rat plasma by a sensitive LC-MS/MS method.

Purification Methods

Crystallise it from water. [Beilstein 26 II 263, 26 III/IV 2329.]

References

[1] R. Sellman, &P. J. Klemi. “Kidney toxicity of 3-methylxanthine in the rat.” Journal of Applied Toxicology 4 6 (1984): 304–307.
[2] K. H. Algharrawi. “Direct conversion of theophylline to 3-methylxanthine by metabolically engineered E. coli.” Microbial Cell Factories 14 1 (2015).
[3] Binxing Zhou. “3-Methylxanthine production through biodegradation of theobromine by Aspergillus sydowii PT-2.” BMC Microbiology (2020): 269.

90801-87-9
1076-22-8
Synthesis of 3-Methylxanthine from 1H-Imidazole-4-carboxamide,5-(methylamino)-(9CI)
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View Lastest Price from 3-Methylxanthine manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
3-Methylxanthine pictures 2026-05-29 3-Methylxanthine
1076-22-8
US $0.00 / kg 1kg 0.98 1000 Henan Boweixin Biotechnology Co., Ltd.
2,6-Dihydroxy-3-methylpurine pictures 2026-05-29 2,6-Dihydroxy-3-methylpurine
1076-22-8
US $0.00-0.00 / Kg/Drum 1KG 98%min 500kg WUHAN FORTUNA CHEMICAL CO., LTD
2,6-Dihydroxy-3-methylpurine pictures 2026-05-21 2,6-Dihydroxy-3-methylpurine
1076-22-8
US $15.00 / KG 1KG 99% 20mt Jinan Finer Chemical Co., Ltd
  • 3-Methylxanthine pictures
  • 3-Methylxanthine
    1076-22-8
  • US $0.00 / kg
  • 0.98
  • Henan Boweixin Biotechnology Co., Ltd.
3-METHYLXANTHINE Theophylline-ethylenediamine Impurity 2(Theophylline-ethylenediamine EP Impurity B) AKOS NCG-0058 2,6-DIHYDROXY-3-METHYLPURINE 3-methyl-7H-purine-2,6-dione 3,7-dihydro-3-methyl-1H-purine-2,6-dione 3-METHYLXANTHINE XANTHINE DERIVATIVE 3-METHYLXANTHINE CRYSTALLINE 3-Methyl-9H-purine-2,6(1H,3H)-dione 3-Methylxantine 3-methyl-7H-purine-2,6-quinone 3-Methyl-1H-purine-2,6(3H,7H)-dione 3-Methyl-3H-purine-2,6-diol 3-Methy-xanthine 3-METHYLXANTHINE 98+% 1H-Purine-2,6-dione, 3,9-dihydro-3-Methyl- Theophylline Impurity B 3-methyl-7H-xanthine Theophylline-ethylenediamine EP Impurity B 3 METHYL XANTHINE (1076-22-8) Theophylline Related Compound B 3,7-dihydro-3-methyl-1h-purine-6-dione 3-methyl-xanthin 3-methyl-9H-xanthine 6-Dihydroxy-3-methylpurine Linaint-E Theophylline EP Impurity B Pentoxifylline EP impurity B Pentoxifylline Impurity 2(Pentoxifylline EP Impurity B) 3-Methylxanthine> Theophylline EP Impurity B (Pentoxifylline EP Impurity B) Linagliptin 3-Methyl Xanthine Impurity Pentoxifylline Impurity 2(Pentoxifylline EP Impurity A) 2,6-Dihydroxy-3-methylpurine USP/EP/BP (2-(chloromethyl)-4-methylquinazoline),2,6-Dihydroxy-3-methylpurine Linagliptin intermediates,2,6-Dihydroxy-3-methylpurine Pentoxifylline EP Impurity B (Theophylline EP Impurity B/ Linagliptin 3-Methyl Xanthine Impurity) Linagliptin 3-Methyl Xanthine Impurity (Pentoxifylline EP Impurity B/ Theophylline EP Impurity B) Theophylline EP Impurity B (Pentoxifylline EP Impurity B/ Linagliptin 3-Methyl Xanthine Impurity) TIANFU-CHEM - 2,6-Dihydroxy-3-methylpurine Theophylline Related Compound B (3-Methyl-1H-purine-2,6-dione) (1653026) Pentoxifylline Impurity B Theophylline-Ethylenediamine Impurity B Theophylline USP Related Compound B 3-Methyl-3,7-dihydropurine-2,6-dione b . 3-me th yl-3,7-d i h yd ro-1h -puri ne -2,6-d i one , Theophylline (Pentoxifylline) EP Impurity B Linagliptin intermediate 3-Methylxanthine( india site) 3-Methylxanthine, ≥ 98.0% Zotepine Impurity6 3-Methyl-3,7-dihydro-1H-purine-2,6-dione (3-Methylxanthine) 3-Methylxanthine, 10 mM in DMSO Theophylline Impurity B(Pentoxifylline EP Impurity B) PENTOXIFYLLINE EP IMPURITY B/3-METHYL XANTHINE 3-Methylxanthine ,S6186 Theophylline EP Impurity B (Theophylline USP Related Compound B, Pentoxifylline EP Impurity B) 3-Methyl-3,7-dihydro-1H-purine-2,6-dione 1076-22-8