2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one

Name: 2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 19819-15-9
Cat. No. CS-0073675
Purity≥97%
MDL No.MFCD00454938

HazMat Fee +

HazMat Fee

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it. There is a HazMat shipping fee for each item that qualifies as a dangerous good, except in the following scenarios:

The shipment is processed through FedEx Ground under the Limited Quantity option.

Each bottle is packed as an Excepted Quantity, with a maximum of 1g for items in class 6.1 packing group I or II, and up to 25g for all other hazardous materials.

If shipping is charged to your FedEx account, the HazMat fee will be billed directly by the courier. Otherwise, the fee will be included on your invoice. To help you avoid the HazMat fee, we can package a 5g order of a class 6.1 packing group I or II material as five separate 1g units, and a 100g order of any other dangerous good as four 25g units. This packaging adjustment will be made unless you instruct otherwise on your purchase order. Below, you will find the fee schedule from FedEx for handling hazardous materials.

Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

There is a HazMat shipping fee for each item that qualifies as a dangerous good. Please contact our quotation team via email to confirm the details.

*For research and further manufacturing use only, not for direct human use.

2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one|CS-0073675

Structure of 19819-15-9

Size

Price

Quantity

* Please select Quantity before adding items.

Description

This tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidinone scaffold integrates a fused heterocyclic core with a methylated position at the 2-locus, offering enhanced stability and tailored electronic properties. The saturated thiophene ring system imparts favorable solubility and metabolic resilience, enabling efficient incorporation into bioactive scaffolds for medicinal chemistry campaigns.

Application

2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one serves as a privileged heterocyclic scaffold in medicinal chemistry, offering a rigid, planar core with defined hydrogen-bonding capacity. The molecule exhibits bench stability and functions as a versatile building block for functionalization at the C2-methyl and C4 carbonyl positions. Its structure supports diverse transformations including nucleophilic substitution, cross-coupling, and derivatization under standard conditions, enabling efficient access to analogs for target-directed library synthesis.

General Information

CAS No. 19819-15-9
Cat. No. CS-0073675
Purity ≥97%
MDL No. MFCD00454938
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₁H₁₂N₂OS
Molecular Weight 220.30
Synonym(s) 2-Methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4-ol
SMILES O=C1C2=C(SC3=C2CCCC3)N=C(C)N1

Computational Chemistry Data

TPSA 45.75
LogP 2.17182
H_Acceptors 3
H_Donors 1
Rotatable_Bonds 0

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

To search for quality control of cas , please enter both the product number and the lot/batch number.

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Thiophene compounds

Key Words

19819-15-9 sigma19819-15-9 manufacturer19819-15-9 price19819-15-9 structure19819-15-9 SDSbuy 19819-15-919819-15-9 supplier19819-15-9 uses19819-15-9 molecular weightprice of 19819-15-919819-15-9 chemical name formula of 19819-15-9

Salutation:	*Country or Region:
*Applicant Name:	*Organization Name:
*Email Address:	Quantity:
CAS NO. :	Product Name:
Remarks:
Upload Pictures

CAS.No.		Product Name
Applicant Name *		Email Address *
Phone Number *		Organization Name*
Country or Region*		Quantity*
Remarks:

Product Name:
Cat. No.: .		CAS NO. :
Quantity:

2-Methyl-5,6,7,8-tetrahydrobenzo[4,5]thieno[2,3-d]pyrimidin-4(3H)-one

CAS No. 19819-15-9

Recommended Products