S-2238, Chromogenic Substrate for Thrombin, Large Packages

S-2238 is chromogenic substrate for thrombin. When catalyzed by thrombin, it releases a free pNA which could be detected by a spectrophotometer at 405 nm wavelength.

These large prepacks of chromogenic substrate are only for production of diagnostic kits. For anti-FIIa assays of heparin and LMWHs, please see S-2238, Chromogenic Substrate for Thrombin.


Chromogenic substrate S-2238 can be used in many applications. For example, it is a key reagent in antithrombin tests (anti-FIIa approach).


Form: white lyophizied powder, stored in vials.

Synonyms: S-2238, thrombin substrate

CAS number: 113711-77-6

Molecular formula: H-D-Phe-Pip-Arg-pNA·2HCl

Molecular weight: 625.6 Da

Purity: ≥ 99% (HPLC)

Absorption coefficient: A405nm ≤ 0.120 [L/(g·cm)]

Solubility: > 10 mg/mL (in pure water)

Stability and Storage

The lyophilized powder of S-2238 will keep active at 2 to 8 °C for at least 24 months.

Order Information

Catalog number: AG00-0101G

Package sizes: 1 g, 10 g, 50 g


Do NOT use it as drugs or in vivo experiments.