1. Apoptosis
  2. MDM-2/p53
  3. Siremadlin

Siremadlin (Synonyms: NVP-HDM201; HDM201)

Cat. No.: HY-18658 Purity: 99.19% ee.: 99.85%
Handling Instructions

Siremadlin (NVP-HDM201) is a potent and highly specific MDM-2/p53 inhibitor.

For research use only. We do not sell to patients.

Siremadlin Chemical Structure

Siremadlin Chemical Structure

CAS No. : 1448867-41-1

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 183 In-stock
Estimated Time of Arrival: December 31
1 mg USD 70 In-stock
Estimated Time of Arrival: December 31
5 mg USD 150 In-stock
Estimated Time of Arrival: December 31
10 mg USD 220 In-stock
Estimated Time of Arrival: December 31
50 mg USD 650 In-stock
Estimated Time of Arrival: December 31
100 mg USD 1100 In-stock
Estimated Time of Arrival: December 31
200 mg   Get quote  
500 mg   Get quote  

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Customer Review

Based on 1 publication(s) in Google Scholar

Other Forms of Siremadlin:

Top Publications Citing Use of Products
  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review


Siremadlin (NVP-HDM201) is a potent and highly specific MDM-2/p53 inhibitor.

In Vitro

Siremadlin (NVP-HDM201) disrupts both human and murine TP53- MDM2 interactions, with nanomolar cellular IC50 values, blocking TP53 degradation[1].

In Vivo

Siremadlin (NVP-HDM201) is an imidazolopyrrolidinone analogue, showing a very advantageous in vivo profile. NVP-HDM201 has recently entered Phase 1 clinical trials in cancer patients[2]. Constitutive PB mutagenesis in Arf−/− mice provides a collection of spontaneous tumors with characterized insertional genetic landscapes. Tumors are allografted in large cohorts of mice to assess the pharmacologic effects of Siremadlin (NVP-HDM201). Sixteen out of 21 allograft models are sensitive to Siremadlin (NVP-HDM201) but ultimately relapse under treatment. A comparison of tumors with acquired resistance to Siremadlin (NVP-HDM201) and untreated tumors identified 87 genes that are differentially and significantly targeted by the PB transposon[1]. Siremadlin (NVP-HDM201) administered either daily at a low dose or once at a high dose revealed a differentiated engagement of the p53 molecular response. In contrast to the daily low dose treatment regimen, the single high dose Siremadlin (NVP-HDM201) regimen results in a rapid and dramatic induction of p53-dependent PUMA expression and apoptosis. This is consistent with the finding that a single high dose Siremadlin (NVP-HDM201) treatment, administered orally or intravenously, results in a robust and sustained tumor regression. Overall, both daily and once every 3 weeks dosing regimen shows comparable long term efficacy in preclinical studies. The ongoing clinical trial is currently designed to compare both dosing regimens with regard to efficacy and tolerability[3].

Clinical Trial
Molecular Weight







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Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : ≥ 56.75 mg/mL (102.18 mM)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.8005 mL 9.0024 mL 18.0047 mL
5 mM 0.3601 mL 1.8005 mL 3.6009 mL
10 mM 0.1800 mL 0.9002 mL 1.8005 mL
*Please refer to the solubility information to select the appropriate solvent.

Purity: 99.19% ee.: 99.85%

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