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2-methylthieno[2,3-d]pyrimidin-4(3H)-one

2-methylthieno[2,3-d]pyrimidin-4(3H)-one structure

CAS No.: 21582-51-4

Chemical Name:: 2-methylthieno[2,3-d]pyrimidin-4(3H)-one

Synonyms: 2-methylthieno[3,2-d]pyrimidin-4-ol;2-methylthieno[2,3-d]pyrimidin-4-ol;2-METHYL THIENO[2,3-d]PYRIMIDINE-4-OL;2-methylthieno[2,3-d]pyrimidin-4(3H)-one;2-Methyl-3H-thieno[2,3-d]pyrimidin-4-one;Thieno[2,3-d]pyrimidin-4(1H)-one, 2-methyl-;2-Methyl-3,4-dihydro-4-oxothieno[2,3-d]pyrimidine;2-Methyl-3,4-dihydro-4-oxothieno[2,3-d]pyrimidine;2-methylthieno[2,3-d]pyrimidin-4(3H)-one(SALTDATA: FREE);2-methylthieno[2,3-d]pyrimidin-4(3H)-one ISO 9001：2015 REACH

CBNumber:: CB51079569

Molecular Formula:: C7H6N2OS

Molecular Weight:: 166.2

MDL Number:: MFCD00706457

MOL File:: 21582-51-4.mol

MSDS File:: SDS

Last updated:2026-05-28 01:29:51

Product description	Number	Pack Size	Price
2-Methyl-3,4-dihydro-4-oxothieno[2,3-d]pyrimidine Aldrich	JRD0266	1g	$454
2-Methylthieno[2,3-D]Pyrimidin-4-Ol ≥97%	AA00BE1O	50mg	$37
2-Methylthieno[2,3-D]Pyrimidin-4-Ol 97%	AA00BE1O	100mg	$41
2-Methylthieno[2,3-D]Pyrimidin-4-Ol 97%	AA00BE1O	250mg	$60
2-Methylthieno[2,3-D]Pyrimidin-4-Ol 97%	AA00BE1O	1g	$164
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2-methylthieno[2,3-d]pyrimidin-4(3H)-one Properties

Melting point	204-206℃
Density	1.53
storage temp.	Storage temp. 2-8°C
form	solid
Appearance	Off-white to gray Solid
InChI	InChI=1S/C7H6N2OS/c1-4-8-6(10)5-2-3-11-7(5)9-4/h2-3H,1H3,(H,8,9,10)
InChIKey	YAGLWUMMXGHFDI-UHFFFAOYSA-N
SMILES	C1(C)=NC(=O)C2C=CSC=2N1
UNSPSC Code	12352200
NACRES	NA.21

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H302
Precautionary statements	P280-P305+P351+P338
Hazard Codes	Xn
Risk Statements	22
WGK Germany	WGK 3
HS Code	2934999090
Storage Class	11 - Combustible Solids
Hazard Classifications	Acute Tox. 4 Oral

2-methylthieno[2,3-d]pyrimidin-4(3H)-one price More Price(35)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	JRD0266	2-Methyl-3,4-dihydro-4-oxothieno[2,3-d]pyrimidine Aldrich	21582-51-4	1g	$454	2026-04-30	Buy
aablocks	AA00BE1O	2-Methylthieno[2,3-D]Pyrimidin-4-Ol ≥97%	21582-51-4	50mg	$37	2026-05-28	Buy
aablocks	AA00BE1O	2-Methylthieno[2,3-D]Pyrimidin-4-Ol 97%	21582-51-4	100mg	$41	2026-05-28	Buy
aablocks	AA00BE1O	2-Methylthieno[2,3-D]Pyrimidin-4-Ol 97%	21582-51-4	250mg	$60	2026-05-28	Buy
aablocks	AA00BE1O	2-Methylthieno[2,3-D]Pyrimidin-4-Ol 97%	21582-51-4	1g	$164	2026-05-28	Buy

Product number	Packaging	Price	Buy
JRD0266	1g	$454	Buy
AA00BE1O	50mg	$37	Buy
AA00BE1O	100mg	$41	Buy
AA00BE1O	250mg	$60	Buy
AA00BE1O	1g	$164	Buy

2-methylthieno[2,3-d]pyrimidin-4(3H)-one Preparation Products And Raw materials

Raw materials

Preparation Products

2-methylthieno[2,3-d]pyrimidin-4(3H)-one Suppliers

Global( 52)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8617317452075	jack.li@time-chemicals.com	China	1803	55
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	sales@tnjchem.com	China	34563	58
Dideu Industries Group Limited	+86-29-89586680 +86-15129568250	1026@dideu.com	China	18903	58
Dayang Chem (Hangzhou) Co.,Ltd.	+86-0571-88938639 +8617705817739	info@dycnchem.com	China	52705	58
Hangzhou MolCore BioPharmatech Co.,Ltd.	+86-057181025280; +8617767106207	sales@molcore.com	China	49734	58
PT CHEM GROUP LIMITED	+86-85511178;	peter68@ptchemgroup.com	China	35425	58
GIHI CHEMICALS CO.,LIMITED	+86-571-86217390; +8618058761490	info@gihichemicals.com	China	49967	58
Aladdin Scientific		tp@aladdinsci.com	United States	57505	58
Amadis Chemical Company Limited	571-89925085	sales@amadischem.com	China	131957	58

Supplier	Advantage
Shanghai Time Chemicals CO., Ltd.	55
Alchem Pharmtech,Inc.	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dideu Industries Group Limited	58
Dayang Chem (Hangzhou) Co.,Ltd.	58
Hangzhou MolCore BioPharmatech Co.,Ltd.	58
PT CHEM GROUP LIMITED	58
GIHI CHEMICALS CO.,LIMITED	58
Aladdin Scientific	58
Amadis Chemical Company Limited	58

View Lastest Price from 2-methylthieno[2,3-d]pyrimidin-4(3H)-one manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2025-11-18	2-methylthieno[2,3-d]pyrimidin-4(3H)-one 21582-51-4	$1.10	1g	99.00%	100 Tons Min	Dideu Industries Group Limited

2-methylthieno[2,3-d]pyrimidin-4(3H)-one
21582-51-4
$1.10
99.00%
Dideu Industries Group Limited

2-methylthieno[2,3-d]pyrimidin-4(3H)-one Spectrum

2-methylthieno[2,3-d]pyrimidin-4(3H)-one(21582-51-4)¹HNMR

21582-51-4(2-methylthieno[2,3-d]pyrimidin-4(3H)-one)Related Search:

2-methyl-3,5,6,7-tetrahydro-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-4-one 2,5-DIMETHYL-4-OXO-3,4-DIHYDRO-THIENO[2,3-D]PYRIMIDINE-6-CARBOXYLIC ACID ETHYL ESTER 3-AMINO-6-ETHYL-2-METHYLTHIENO[2,3-D]PYRIMIDIN-4(3H)-ONE 3-(4-OXO-3,4,5,6,7,8-HEXAHYDRO-BENZO[4,5]THIENO[2,3-D]PYRIMIDIN-2-YL)-PROPIONIC ACID AKOS 94123

3-(4-OXO-3,5,6,7-TETRAHYDRO-4H-CYCLOPENTA[4,5]THIENO[2,3-D]PYRIMIDIN-2-YL)PROPANOIC ACID 3-AMINO-2,6-DIMETHYL-3H-THIENO[2,3-D]PYRIMIDIN-4-ONE SPECS AH-262/31831062 AKOS 92543

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2-methylthieno[2,3-d]pyrimidin-4(3H)-one 2-methylthieno[2,3-d]pyrimidin-4-ol 2-methylthieno[3,2-d]pyrimidin-4-ol 2-methylthieno[2,3-d]pyrimidin-4(3H)-one(SALTDATA: FREE) 2-Methyl-3H-thieno[2,3-d]pyrimidin-4-one 2-Methyl-3,4-dihydro-4-oxothieno[2,3-d]pyrimidine Thieno[2,3-d]pyrimidin-4(1H)-one, 2-methyl- 2-methylthieno[2,3-d]pyrimidin-4(3H)-one ISO 9001：2015 REACH 2-METHYL THIENO[2,3-d]PYRIMIDINE-4-OL 2-Methyl-3,4-dihydro-4-oxothieno[2,3-d]pyrimidine 21582-51-4