ChemicalBook > CAS DataBase List > 5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE

5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE

Product Name
5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE
CAS No.
18593-44-7
Chemical Name
5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE
Synonyms
ST 059935;AKOS 91440;AKOS B020883;AURORA 20179;AKOS MSC-0512;BUTTPARK 37\11-55;ART-CHEM-BB B020883;TIMTEC-BB SBB009541;OTAVA-BB BB0127460562;5,6-Dimethylthieno[2,3-d]pyrimidin-4-ol
CBNumber
CB3144974
Molecular Formula
C8H8N2OS
Formula Weight
180.23
MOL File
18593-44-7.mol
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5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE Property

Melting point:
269-270℃ (ethanol )
storage temp. 
2-8°C(protect from light)
form 
solid
Appearance
Yellow to brown Solid
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Safety

Hazard Codes 
Xn
Risk Statements 
22-20/21/22
Safety Statements 
3/7-36/37
HS Code 
29335990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
OTV000327
Product name
5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one
Purity
Aldrich
Packaging
1g
Price
$259
Updated
2025/07/31
TRC
Product number
D457463
Product name
5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one
Packaging
100mg
Price
$60
Updated
2021/12/16
Oakwood
Product number
017434
Product name
5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one
Packaging
250mg
Price
$33
Updated
2021/12/16
Oakwood
Product number
017434
Product name
5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one
Packaging
1g
Price
$90
Updated
2021/12/16
AK Scientific
Product number
Z2933
Product name
5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one
Packaging
250mg
Price
$94
Updated
2021/12/16
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5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE Chemical Properties,Usage,Production

Chemical Properties

Off-white to light yellow solid

Synthesis

51486-04-5

77287-34-4

18593-44-7

GENERAL METHODS: A mixture of 2-amino-4,5-dimethylthiophene-3-carboxamide (1 mmol) and compound (CAS:77287-34-4) (1 mmol) with formamide (5-6 mmol) in acetic acid (1 mmol) was placed in a microwave reactor and irradiated for 10 min at 130 °C under 300 W power. After completion of the reaction, the reaction mixture was cooled to room temperature and subsequently poured into cold water. The precipitate was collected by filtration, washed with water and finally recrystallized from ethanol to obtain the pure product. The product 5,6-dimethyl-3H-thieno[2,3-d]pyrimidin-4-one (4a) had a melting point of 180-183 °C; IR (cm^-1 ): 3320 (NH), 1670 (C=O); 1H-NMR (DMSO-d6) δ: 1.7 (s, 3H, CH3), 2.0 (s, 3H, CH3), 7.80 (s, 1H Pyrimidine-H), 10.00 (br.s, 1H, NH); MS: m/z 180 [M+] (95) (C8H8N2OS); Elemental analysis of calculated values (%): C: 53.33, H: 4.44, N: 15.55; measured values (%): C: 53.45, H: 4.30, N: 15.56.

References

[1] Oriental Journal of Chemistry, 2014, vol. 30, # 2, p. 469 - 477

5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE Preparation Products And Raw materials

Raw materials

Sulfur N,N-Dimethylformamide 2-Butanone Triethylamine Ethyl cyanoacetate Formamide

Preparation Products

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5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE Suppliers

Austria 1 China 60 Germany 2 India 1 Russia 1 Ukraine 1 United Kingdom 3 United States 10 Global 79
ART-CHEM GmbH
Tel
--
Fax
--
Email
art-chem@art-chem.com
Country
Russia
ProdList
6560
Advantage
30
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View Lastest Price from 5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE manufacturers

Career Henan Chemical Co
Product
5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE 18593-44-7
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
100KG
Release date
2020-01-09

18593-44-7, 5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONERelated Search:

3-(4-OXO-3,4,5,6,7,8-HEXAHYDRO-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-2-YL)-PROPIONIC ACID (1)Benzothieno(2,3-d)pyrimidin-4(3H)-one, 5,6,7,8-tetrahydro-3-amino-2 -(phenylamino)- (1)benzothieno(2,3-d)pyrimidin-4(1h)-one,2,3,5,6,7,8-hexahydro-3-methyl-2-thio ETHYL 5-METHYL-4-OXO-3,4-DIHYDROTHIENO[2,3-D]-PYRIMIDINE-6-CARBOXYLATE 2-MERCAPTO-3-PHENYL-5,6,7,8-TETRAHYDRO-3H-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-ONE AKOS 92543 AKOS 94123 3-AMINO-5-ETHYL-2,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE 3-AMINO-2,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE 5,6-Dimethylthieno[2,3-d]pyrimidin-4(3H)-one ,97% 2-(MERCAPTOMETHYL)-5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE 3-CYCLOHEXYL-2-MERCAPTO-5,6,7,8-TETRAHYDRO-3H-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-ONE AKOS BBS-00007197 7-[3-CHLORO-5-(TRIFLUOROMETHYL)-2-PYRIDINYL]-2-[(2,4-DICHLOROBENZYL)SULFANYL]-3-METHYL-5,6,7,8-TETRAHYDROPYRIDO[4',3':4,5]THIENO[2,3-D]PYRIMIDIN-4(3H)-ONE AKOS BBS-00007188 AKOS BBS-00007193 7-[3-CHLORO-5-(TRIFLUOROMETHYL)-2-PYRIDINYL]-3-METHYL-2-SULFANYL-5,6,7,8-TETRAHYDROPYRIDO[4',3':4,5]THIENO[2,3-D]PYRIMIDIN-4(3H)-ONE 2-MERCAPTO-5,6,7,8-TETRAHYDRO-3H-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-4-ONE

  • OTAVA-BB BB0127460562
  • TIMTEC-BB SBB009541
  • 5,6-DIMETHYL-3 H-THIENO[2,3-D ]PYRIMIDIN-4-ONE
  • 5,6-DIMETHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE
  • AKOS MSC-0512
  • AKOS 91440
  • AKOS B020883
  • ART-CHEM-BB B020883
  • BUTTPARK 37\11-55
  • AURORA 20179
  • 5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one(SALTDATA: FREE)
  • 4-Hydroxy-5,6-dimethylthieno[2,3-d]pyrimidine
  • 5,6-Dimethyl-1H-thieno[2,3-d]pyrimidin-4-one
  • 5,6-Dimethylthieno[2,3-d]pyrimidin-4-ol
  • ST 059935
  • 5,6-dimethyl-3H-thieno[3,2-e]pyrimidin-4-one
  • 5,6-<WBR>DiMethylthieno[2,3-<WBR>d]<WBR>pyriMidin-<WBR>4(3<I>H</I>)-one
  • Thieno[2,3-d]pyrimidin-4(1H)-one, 5,6-dimethyl-
  • 5,6-Dimethylthieno[2,3-d]pyrimidin-4(3<i>H</i>)-one
  • 18593-44-7