5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole

Name: 5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 903550-12-9
Cat. No. CS-0091812
Purity≥95%
MDL No.MFCD09037502

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.

5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole|CS-0091812

Structure of 903550-12-9

Size

Price

Quantity

* Please select Quantity before adding items.

Description

This pyrazole boronate ester integrates a stable tetramethylboronate group with a silyl-protected aldehyde handle, enabling orthogonal functionalization in late-stage diversification. The trimethylsilyl ether moiety provides enhanced stability and selective deprotection under mild conditions.

Application

This boronate ester serves as a versatile building block in Suzuki-Miyaura cross-coupling reactions, enabling efficient C–C bond formation under mild conditions. The pyrazole core provides a stable heterocyclic scaffold with moderate bioavailability relevance, while the 1-(trimethylsilyl)ethoxymethyl group offers orthogonal protection and facile deprotection. Bench-stable and compatible with diverse functional groups, **5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole** facilitates streamlined synthesis of complex pyrazole derivatives for medicinal chemistry and materials applications.

General Information

CAS No. 903550-12-9
Cat. No. CS-0091812
Purity ≥95%
MDL No. MFCD09037502
Storage -20°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₅H₂₉BN₂O₃Si
Molecular Weight 324.30
Synonym(s) 1-(2-Trimethylsilylethoxy)methyl-1H-pyrazole-5-boronic acid pinacol ester
SMILES C[Si](CCOCN1N=CC=C1B2OC(C)(C)C(C)(C)O2)(C)C

Computational Chemistry Data

TPSA 45.51
LogP 2.4946
H_Acceptors 5
H_Donors 0
Rotatable_Bonds 6

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 Functional Group Boronic Acid And Its Ester

Building Blocks Functional Group Organosilicon compounds

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Key Words

903550-12-9 sigma903550-12-9 manufacturer903550-12-9 price903550-12-9 structure903550-12-9 SDSbuy 903550-12-9903550-12-9 supplier903550-12-9 uses903550-12-9 molecular weightprice of 903550-12-9903550-12-9 chemical name formula of 903550-12-9

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:

5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole

CAS No. 903550-12-9

Recommended Products