Chinese Japanese Germany Korea
ChemicalBook >> CAS DataBase List >>2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one

2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one

2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one Structure
2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one structure
CAS No.
18593-45-8
Chemical Name:
2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one
Synonyms
2,5,6-Trimethylthieno[2,3-d]pyrimidin-4(3H)-one;Thieno[2,3-d]pyrimidin-4(1H)-one, 2,5,6-trimethyl-;2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one;2,5,6-Trimethylthieno[2,3-d]pyrimidin-4(3H)-one
CBNumber:
CB03802667
Molecular Formula:
C9H10N2OS
Molecular Weight:
194.25
MDL Number:
MFCD00457518
MOL File:
18593-45-8.mol
MSDS File:
SDS
Last updated:2026-05-27 21:52:43
Request For Quotation

2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one Properties

Melting point 266 °C
Density 1.39±0.1 g/cm3(Predicted)
pka 11.62±0.20(Predicted)
form solid
InChI 1S/C9H10N2OS/c1-4-5(2)13-9-7(4)8(12)10-6(3)11-9/h1-3H3,(H,10,11,12)
InChIKey ONHXPYXOJCRCBR-UHFFFAOYSA-N
SMILES O=C1C2=C(SC(C)=C2C)N=C(C)N1
UNSPSC Code 12352200
NACRES NA.21

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P264-P270-P301+P312-P330-P501
WGK Germany  WGK 3
Storage Class 11 - Combustible Solids
Hazard Classifications Acute Tox. 4 Oral

2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one price More Price(13)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich OTV000950 2,5,6-Trimethylthieno[2,3-d]pyrimidin-4(3H)-one 18593-45-8 1G $352 2026-04-30 Buy
Biosynth TAA59345 2,5,6-Trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one 18593-45-8 250mg $330 2026-06-05 Buy
Biosynth TAA59345 2,5,6-Trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one 18593-45-8 2.5g $1150.5 2026-06-05 Buy
Matrix Scientific 297753 2,5,6-Trimethylthieno[2,3-d]pyrimidin-4(3H)-one 18593-45-8 100.00mg $110 2026-05-19 Buy
Matrix Scientific 297753 2,5,6-Trimethylthieno[2,3-d]pyrimidin-4(3H)-one 18593-45-8 250.00mg $193 2026-05-19 Buy
Product number Packaging Price Buy
OTV000950 1G $352 Buy
TAA59345 250mg $330 Buy
TAA59345 2.5g $1150.5 Buy
297753 100.00mg $110 Buy
297753 250.00mg $193 Buy

2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one Chemical Properties, Uses, Production

2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one Preparation Products And Raw materials

Raw materials

Preparation Products

4-Hydrazino-2,5,6-trimethylthieno[2,3-d]pyrimidine

2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one Suppliers

Global Suppliers ( 3)
Supplier Tel Email Country ProdList Advantage
Merck KGaA -- ordercn@merckgroup.com China 6376 58
Biosynth Biological Technology (Suzhou) Co Ltd -- sales@biosynth.com China 6032 58
OTAVA chemicals -- north.america@otavachemicals.com Ukraine 6494 72
Supplier Advantage
Merck KGaA 58
Biosynth Biological Technology (Suzhou) Co Ltd 58
OTAVA chemicals 72
2,5,6-trimethyl-3H,4H-thieno[2,3-d]pyrimidin-4-one Thieno[2,3-d]pyrimidin-4(1H)-one, 2,5,6-trimethyl- 2,5,6-Trimethylthieno[2,3-d]pyrimidin-4(3H)-one 2,5,6-Trimethylthieno[2,3-d]pyrimidin-4(3H)-one 18593-45-8