PeptideDB

SNIPER(ER)-87 2222354-91-6

SNIPER(ER)-87 2222354-91-6

CAS No.: 2222354-91-6

SNIPER(ER)-87 consists of a derivative of the inhibitor of apoptosis protein (IAP) ligand LCL161 conjugated by a PEG lin
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This product is for research use only, not for human use. We do not sell to patients.

SNIPER(ER)-87 consists of a derivative of the inhibitor of apoptosis protein (IAP) ligand LCL161 conjugated by a PEG linker to the estrogen receptor α (ERα) ligand 4-hydroxytamoxifen, which effectively degrades the ERα protein (IC50=0.097 μM). XIAP is the principal E3 ubiquitin ligase that causes the SNIPER(ER)-87-induced degradation of ERα, and SNIPER(ER)-87 preferentially recruits XIAP to ERα in the cells.

Physicochemical Properties


Molecular Formula C59H73N5O10S
Exact Mass 1043.51
Elemental Analysis C, 67.86; H, 7.05; N, 6.71; O, 15.32; S, 3.07
CAS # 2222354-91-6
Related CAS # 2222354-91-6
PubChem CID 139600324
Appearance Solid powder
LogP 9.8
Hydrogen Bond Donor Count 3
Hydrogen Bond Acceptor Count 13
Rotatable Bond Count 28
Heavy Atom Count 75
Complexity 1760
Defined Atom Stereocenter Count 3
SMILES

CC/C(=C(/C1=CC=C(C=C1)O)\C2=CC=C(C=C2)OCCN(C)C(=O)COCCOCCOCCOC3=CC=CC(=C3)C(=O)C4=CSC(=N4)[C@@H]5CCCN5C(=O)[C@H](C6CCCCC6)NC(=O)[C@H](C)NC)/C7=CC=CC=C7

InChi Key ILLYWIKUEZHTSD-MEWFHHHASA-N
InChi Code

InChI=1S/C59H73N5O10S/c1-5-50(42-14-8-6-9-15-42)54(43-21-25-47(65)26-22-43)44-23-27-48(28-24-44)73-31-30-63(4)53(66)39-72-35-34-70-32-33-71-36-37-74-49-19-12-18-46(38-49)56(67)51-40-75-58(61-51)52-20-13-29-64(52)59(69)55(45-16-10-7-11-17-45)62-57(68)41(2)60-3/h6,8-9,12,14-15,18-19,21-28,38,40-41,45,52,55,60,65H,5,7,10-11,13,16-17,20,29-37,39H2,1-4H3,(H,62,68)/b54-50+/t41-,52-,55-/m0/s1
Chemical Name

(2S)-N-[(1S)-1-cyclohexyl-2-[(2S)-2-[4-[3-[2-[2-[2-[2-[2-[4-[(E)-1-(4-hydroxyphenyl)-2-phenylbut-1-enyl]phenoxy]ethyl-methylamino]-2-oxoethoxy]ethoxy]ethoxy]ethoxy]benzoyl]-1,3-thiazol-2-yl]pyrrolidin-1-yl]-2-oxoethyl]-2-(methylamino)propanamide
Synonyms

SNIPER(ER)-87; SNIPER(ER)87; SNIPER(ER) 87
HS Tariff Code 2934.99.9001
Storage

Powder-20°C 3 years

4°C 2 years

In solvent -80°C 6 months

-20°C 1 month

Shipping Condition Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity


ln Vitro SNIPER(ER)-87 (0.1-1000 nM; 72 hours) has IC50 values of 15.6 nM in MCF-7 and 9.6 nM in T47D cells, which effectively suppresses the growth of ERα-positive breast tumor cells and inhibits the ERα-dependent transcriptional activation by β-estradiol[1].
ln Vivo SNIPER(ER)-87 (30 mg/kg, i.p., every 24 h for 14 days) suppresses the growth of MCF-7 orthotopic breast tumor xenografts in female BALB/c nude mice aged 6 weeks[1].
References

[1]. In Vivo Knockdown of Pathogenic Proteins via Specific and Nongenetic Inhibitor of Apoptosis Protein (IAP)-dependent Protein Erasers (SNIPERs). J Biol Chem. 2017 Mar 17;292(11):4556-4570.

[2]. Derivatization of inhibitor of apoptosis protein (IAP) ligands yields improved inducers of estrogen receptor α degradation. J Biol Chem. 2018 May 4;293(18):6776-6790.


Solubility Data


Solubility (In Vitro) May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo) Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300 :Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300:Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)

Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders

Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)