tert-Butyl (6R)-6-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate

Name: tert-Butyl (6R)-6-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 1639881-13-2
Cat. No. CS-0058080
Purity≥97%
MDL No.None

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.

tert-Butyl (6R)-6-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate|CS-0058080

Structure of 1639881-13-2

Size

Price

Quantity

* Please select Quantity before adding items.

Description

tert-Butyl (6R)-6-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate is a stereodefined heterocyclic building block featuring a chiral methyl group at the 6-position. This bench-stable derivative integrates seamlessly into synthetic routes requiring controlled stereochemistry and enhanced solubility in organic media. The tert-butyl ester facilitates straightforward deprotection under mild acidic conditions.

Application

tert-Butyl (6R)-6-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate serves as a stereochemically defined building block for the synthesis of pyrazolo[1,5-a]pyrazine scaffolds. Its tert-butyl ester group enables facile deprotection under mild acidic conditions, while the methyl substituent at the 6-position provides a key handle for further functionalization. The compound exhibits excellent bench stability and compatibility with standard coupling reactions, facilitating efficient access to diverse heterocyclic architectures in medicinal chemistry campaigns.

General Information

CAS No. 1639881-13-2
Cat. No. CS-0058080
Purity ≥97%
MDL No. None
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₂H₁₉N₃O₂
Molecular Weight 237.30
Synonym(s) None
SMILES O=C(N1CC2=CC=NN2C[C@H]1C)OC(C)(C)C

Computational Chemistry Data

TPSA 47.36
LogP 2.0223
H_Acceptors 4
H_Donors 0
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-P330-P362+P364-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 Pyrazole compounds

Building Blocks Skeleton Aliphatic heterocycle compounds Piperazine compounds

Building Blocks Skeleton Chiral compounds Chiral Building Blocks

Key Words

1639881-13-2 sigma1639881-13-2 manufacturer1639881-13-2 price1639881-13-2 structure1639881-13-2 SDSbuy 1639881-13-21639881-13-2 supplier1639881-13-2 uses1639881-13-2 molecular weightprice of 1639881-13-21639881-13-2 chemical name formula of 1639881-13-2

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:

tert-Butyl (6R)-6-methyl-4H,5H,6H,7H-pyrazolo[1,5-a]pyrazine-5-carboxylate

CAS No. 1639881-13-2

Recommended Products