WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 202870

CAS#: 162635-04-3

Description: Temsirolimus is an ester analog of rapamycin. Temsirolimus binds to and inhibits the mammalian target of rapamycin (mTOR), resulting in decreased expression of mRNAs necessary for cell cycle progression and arresting cells in the G1 phase of the cell cycle. mTOR is a serine/threonine kinase which plays a role in the PI3K/AKT pathway that is upregulated in some tumors. Temsirolimus (CCI-779) is an intravenous drug for the treatment of renal cell carcinoma (RCC), developed by Wyeth Pharmaceuticals and approved by the U.S. Food and Drug Administration (FDA) in late May 2007, and was also approved by the European Medicines Agency (EMEA) on November 2007.

Chemical Structure

CAS# 162635-04-3

Theoretical Analysis

MedKoo Cat#: 202870
Name: Temsirolimus
CAS#: 162635-04-3
Chemical Formula: C56H87NO16
Exact Mass: 1029.60249
Molecular Weight: 1030.29
Elemental Analysis: C, 65.28; H, 8.51; N, 1.36; O, 24.85

Size Price Shipping out time Quantity
25mg USD 150 Same day
50mg USD 250 Same day
100mg USD 450 Same day
200mg USD 750 Same day
500mg USD 1650 Same day
1g USD 2950 Same day
2g USD 5250 Same day
5g USD 8950 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-03-01. Prices are subject to change without notice.

Temsirolimus, purity > 98%, is in stock. The same day shipping out after order is received.

Synonym: CCI779; CCI-779; CCI 779; Temsirolimus; US brand name: Torisel.

IUPAC/Chemical Name: (1R,2R,4S)-4-{(2R)-2-[(3S,6R,7E,9R,10R,12R,14S,15E,17E,19E,21S,23S,26R,27R,34aS)-9,27-dihydroxy-10,21-dimethoxy-6,8,12,14,20,26-hexamethyl-1,5,11,28,29-pentaoxo-1,4,5,6,9,10,11,12,13,14,21,22,23,24,25,26,27,28,29,31,32,33,34,34a-tetracosahydro-3H-23,27-epoxypyrido[2,1-c][1,4]oxazacyclohentriacontin-3-yl]propyl}-2-methoxycyclohexyl 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoate.


InChi Code: InChI=1S/C56H87NO16/c1-33-17-13-12-14-18-34(2)45(68-9)29-41-22-20-39(7)56(67,73-41)51(63)52(64)57-24-16-15-19-42(57)53(65)71-46(30-43(60)35(3)26-38(6)49(62)50(70-11)48(61)37(5)25-33)36(4)27-40-21-23-44(47(28-40)69-10)72-54(66)55(8,31-58)32-59/h12-14,17-18,26,33,35-37,39-42,44-47,49-50,58-59,62,67H,15-16,19-25,27-32H2,1-11H3/b14-12+,17-13+,34-18+,38-26+/t33-,35-,36-,37-,39-,40+,41+,42+,44-,45+,46+,47-,49-,50+,56-/m1/s1

SMILES Code: O=C(O[C@H]1[C@H](OC)C[C@H](C[C@H]([C@@H](OC([C@@](CCCC2)([H])N2C(C([C@@]3(O)[C@H](C)CC[C@@](O3)([H])C[C@H](OC)/C(C)=C/C=C/C=C/[C@@H](C)C[C@@H](C)C([C@H](OC)[C@H](O)/C(C)=C/[C@H]4C)=O)=O)=O)=O)CC4=O)C)CC1)C(C)(CO)CO

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO, not in water

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:

Preparing Stock Solutions

The following data is based on the product molecular weight 1030.29 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Select a batch to recalculate based on the batch molecular weight:
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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 1: Gomez-Fernandez C, Garden BC, Wu S, Feldman DR, Lacouture ME. The risk of skin rash and stomatitis with the mammalian target of rapamycin inhibitor temsirolimus: a systematic review of the literature and meta-analysis. Eur J Cancer. 2012 Feb;48(3):340-6. Epub 2011 Dec 27. Review. PubMed PMID: 22206873.

2: De Masson A, Fouchard N, Méry-Bossard L, Dauendorffer JN. Cutaneous and mucosal aphthosis during temsirolimus therapy for advanced renal cell carcinoma: review of cutaneous and mucosal side effects of mTOR inhibitors. Dermatology. 2011;223(1):4-8. Epub 2011 Aug 16. Review. PubMed PMID: 21846963.

3: Hess G. Temsirolimus for the treatment of mantle cell lymphoma. Expert Rev Hematol. 2009 Dec;2(6):631-40. Review. PubMed PMID: 21082954.

4: Gerullis H, Ecke TH, Eimer C, Heuck CJ, Otto T. mTOR-inhibition in metastatic renal cell carcinoma. Focus on temsirolimus: a review. Minerva Urol Nefrol. 2010 Dec;62(4):411-23. Review. PubMed PMID: 20944541.

5: Hoy SM, McKeage K. Temsirolimus: In relapsed and/or refractory mantle cell lymphoma. Drugs. 2010 Oct 1;70(14):1819-29. doi: 10.2165/11204940-000000000-00000. Review. PubMed PMID: 20836575.

6: Norum J, Nieder C, Kondo M. Sunitinib, sorafenib, temsirolimus or bevacizumab in the treatment of metastatic renal cell carcinoma: a review of health economic evaluations. J Chemother. 2010 Apr;22(2):75-82. Review. PubMed PMID: 20435564.

7: Ravaud A, Bernhard JC, Gross-Goupil M, Digue L, Ferriere JM. [mTOR inhibitors: temsirolimus and everolimus in the treatment of renal cell carcinoma]. Bull Cancer. 2010;97:45-51. Review. French. PubMed PMID: 20418203.

8: Stock C, Zaccagnini M, Schulze M, Teber D, Rassweiler JJ. Temsirolimus. Recent Results Cancer Res. 2010;184:189-97. Review. PubMed PMID: 20072839.

9: Dancey JE, Curiel R, Purvis J. Evaluating temsirolimus activity in multiple tumors: a review of clinical trials. Semin Oncol. 2009 Dec;36 Suppl 3:S46-58. Review. PubMed PMID: 19963100.

10: Hess G, Smith SM, Berkenblit A, Coiffier B. Temsirolimus in mantle cell lymphoma and other non-Hodgkin lymphoma subtypes. Semin Oncol. 2009 Dec;36 Suppl 3:S37-45. Review. PubMed PMID: 19963099.

Additional Information

Temsirolimus (CCI-779) is an intravenous drug for the treatment of renal cell carcinoma (RCC), developed by Wyeth Pharmaceuticals and approved by the U.S. Food and Drug Administration (FDA) in late May 2007, and was also approved by the European Medicines Agency (EMEA) on November 2007. It is a derivative of sirolimus and is sold as Torisel.
mTOR (mammalian target of rapamycin) is a kinase enzyme inside the cell that collects and interprets the numerous and varied growth and survival signals received by tumor cells. When the kinase activity of mTOR is activated, its downstream effectors, the synthesis of cell cycle proteins such as cyclin D and hypoxia-inducible factor-1a (HIF-1a) are increased. HIF-1a then stimulates VEGF. Whether or not mTOR kinase is activated, determines whether the tumor cell produces key proteins needed for proliferation, growth, survival, and angiogenesis. mTOR is activated in tumor cells by various mechanisms including growth factor surface receptor tyrosine kinases, oncogenes, and loss of tumor suppressor genes. These activating factors are known to be important for malignant transformation and progression. mTOR is particularly important in the biology of renal cancer (RCC) owing to its function in regulating HIF-1a levels. Mutation or loss of the von Hippel Lindau tumor-suppressor gene is common in RCC and is manifested by reduced degradation of HIF-1a. In RCC tumors, activated mTOR further exacerbates accumulation of HIF-1a by increasing synthesis of this transcription factor and its angiogenic target gene products. Temsirolimus is a specific inhibitor of mTOR and interferes with the synthesis of proteins that regulate proliferation, growth, and survival of tumor cells. Treatment with temsirolimus leads to cell cycle arrest in the G1 phase, and also inhibits tumor angiogenesis by reducing synthesis of VEGF.