tert-Butyl (S)-4-methyl-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide

Name: tert-Butyl (S)-4-methyl-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 439948-91-1
Cat. No. CS-0048512
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 (S)-4-methyl-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide|CS-0048512

Structure of 439948-91-1

Size

Price

Quantity

* Please select Quantity before adding items.

Description

This chiral sulfone scaffold features a bench-stable, moisture-tolerant oxathiazolidine core with defined stereochemistry at the 4-methyl position. The tert-butyl ester group enables straightforward deprotection under mild acidic conditions, while the sulfonyl moiety enhances solubility and stability. This configuration facilitates direct incorporation into peptide mimetics and constrained heterocyclic libraries via robust coupling protocols.

Application

tert-Butyl (S)-4-methyl-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide serves as a stable, bench-ready chiral building block for the synthesis of sulfur-containing heterocycles and peptidomimetics. Its oxathiazolidine core enables selective transformations under mild conditions, with excellent functional group tolerance and straightforward deprotection. The tert-butyl ester facilitates purification and isolation, while the stereochemistry is retained during key coupling steps, making it ideal for applications in medicinal chemistry and catalytic asymmetric synthesis.

General Information

CAS No. 439948-91-1
Cat. No. CS-0048512
Purity ≥97%
MDL No. None
Storage -20°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₈H₁₅NO₅S
Molecular Weight 237.27
Synonym(s) tert-butyl(4S)-4-methyl-2,2-dioxo-1,2λ,3-oxathiazolidine-3-carboxylate
SMILES C[C@H]1COS(=O)(=O)N1C(=O)OC(C)(C)C

Computational Chemistry Data

TPSA 72.91
LogP 0.887
H_Acceptors 5
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 : H315-H319-H335
Precautionary Statements : P261-P264-P271-P280-P302+P352-P304+P340-P362-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 Aliphatic heterocycle compounds Other aliphatic heterocycles compounds

Building Blocks Skeleton Chiral compounds Chiral Building Blocks

Key Words

439948-91-1 sigma439948-91-1 manufacturer439948-91-1 price439948-91-1 structure439948-91-1 SDSbuy 439948-91-1439948-91-1 supplier439948-91-1 uses439948-91-1 molecular weightprice of 439948-91-1439948-91-1 chemical name formula of 439948-91-1

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 (S)-4-methyl-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide

CAS No. 439948-91-1

Recommended Products