Question 1

What is the catalog number for (3S,4R) -Tofacitinib?

Accepted Answer

The catalog number for (3S,4R) -Tofacitinib is orb1708148.

Question 2

What sizes are available for (3S,4R) -Tofacitinib?

Accepted Answer

(3S,4R) -Tofacitinib is available in the following size(s): 25 mg, 50 mg, 100 mg.

Question 3

How many pack sizes does (3S,4R) -Tofacitinib come in?

Accepted Answer

(3S,4R) -Tofacitinib is available in 3 different pack sizes.

Question 4

Is (3S,4R) -Tofacitinib in stock?

Accepted Answer

(3S,4R) -Tofacitinib is currently made to order / not held in immediate stock. Contact us for lead time.

Question 5

What is (3S,4R) -Tofacitinib used for?

Accepted Answer

(3S,4R) -Tofacitinib is the less active enantiomer of the JAK3 inhibitor Tofacitinib (IC50 = 1 nM) . This compound is used as a comparative control in biochemical and cellular assays to study JAK-STAT signaling pathways in immunological and inflammatory disease research.

Question 6

What is the shelf life of this product?

Accepted Answer

Shelf life and expiration dates vary by product and are shown on the product listing and label. Products used beyond their expiration date are not eligible for performance-related returns or refunds, so please check the lot number and expiry before use.

Question 7

What expression system was used for this recombinant protein?

Accepted Answer

The expression system, such as E. coli, HEK293, or insect cells, is listed on the datasheet under production details, which can affect post-translational modifications relevant to your application.

Question 8

Can I return this product if I ordered the wrong one?

Accepted Answer

As a consumer, you have a 14-day right of withdrawal from receipt under EU consumer protection law, submitted via our withdrawal/cancellation request form. Note this applies to unused, undamaged products, and doesn’t override the expiry/storage conditions on performance-based claims.

(3S,4R) -Tofacitinib

Product Specifications

CAS Number

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Molecular Formula

Molecular Weight

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