CI 972 (anhydrous)

Modify Date: 2025-08-20 17:37:54

CI 972 (anhydrous) Structure
CI 972 (anhydrous) structure
Common Name CI 972 (anhydrous)
CAS Number 115787-68-3 Molecular Weight 297.76400
Density N/A Boiling Point 602.2ºC at 760mmHg
Molecular Formula C11H12ClN5OS Melting Point N/A
MSDS N/A Flash Point 318ºC

 Use of CI 972 (anhydrous)


CI 972 anhydrous is a potent, orally active, and competitive inhibitor of purine nucleoside phosphorylase (PNP) (Ki=0.83 μM) under development as a T cell-selective immunosuppressive agent[1][2].

 Names

Name 2,6-diamino-7-(thiophen-3-ylmethyl)-1,5-dihydropyrrolo[3,2-d]pyrimidin-4-one,hydrochloride
Synonym More Synonyms

 CI 972 (anhydrous) Biological Activity

Description CI 972 anhydrous is a potent, orally active, and competitive inhibitor of purine nucleoside phosphorylase (PNP) (Ki=0.83 μM) under development as a T cell-selective immunosuppressive agent[1][2].
Related Catalog
Target

Ki: 0.83 μM (PNP)[1]

In Vivo CI 972 anhydrous (5-150 mg/kg; p.o.) produces dose-dependent elevation of plasma inosine one hour after administration to rats[1].
References

[1]. Gilbertsen RB, et al. Biochemical and pharmacological properties of CI-972, a novel 9-deazaguanine analog purine nucleoside phosphorylase (PNP) inhibitor. Adv Exp Med Biol. 1991;309A:41-4.

[2]. Gilbertsen RB,et al. Selective in vitro inhibition of human MOLT-4 T lymphoblasts by the novel purine nucleoside phosphorylase inhibitor, CI-972. Biochem Biophys Res Commun. 1991 Aug 15;178(3):1351-8.

 Chemical & Physical Properties

Boiling Point 602.2ºC at 760mmHg
Molecular Formula C11H12ClN5OS
Molecular Weight 297.76400
Flash Point 318ºC
Exact Mass 297.04500
PSA 142.55000
LogP 2.38120
Vapour Pressure 1.87E-14mmHg at 25°C

 Safety Information

Hazard Codes Xi

 Synonyms

ci 972
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