PeptideDB

SLF 195513-96-3

SLF 195513-96-3

CAS No.: 195513-96-3

SLF is a synthetic ligand for FK506 binding protein (FKBP), with an affinity of 3.1 μM for FKBP51 and IC50 of 2.6 μM f
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SLF is a synthetic ligand for FK506 binding protein (FKBP), with an affinity of 3.1 μM for FKBP51 and IC50 of 2.6 μM for FKBP12. It may be utilized to prepare PROTAC molecules.

Physicochemical Properties


Molecular Formula C30H40N2O6
Molecular Weight 524.65
Exact Mass 524.288
CAS # 195513-96-3
Related CAS # SLF TFA;2378802-47-0
PubChem CID 35027274
Appearance Light yellow to yellow ointment
Density 1.2±0.1 g/cm3
Boiling Point 656.9±65.0 °C at 760 mmHg
Flash Point 351.1±34.3 °C
Vapour Pressure 0.0±2.0 mmHg at 25°C
Index of Refraction 1.559
LogP 3.63
Hydrogen Bond Donor Count 1
Hydrogen Bond Acceptor Count 7
Rotatable Bond Count 12
Heavy Atom Count 38
Complexity 802
Defined Atom Stereocenter Count 2
SMILES

O([C@@]([H])(C1C([H])=C([H])C([H])=C(C=1[H])N([H])[H])C([H])([H])C([H])([H])C1C([H])=C([H])C(=C(C=1[H])OC([H])([H])[H])OC([H])([H])[H])C([C@]1([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])N1C(C(C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])C([H])([H])[H])=O)=O)=O

InChi Key IIDSDBBDZNDWCN-BJKOFHAPSA-N
InChi Code

InChI=1S/C30H40N2O6/c1-6-30(2,3)27(33)28(34)32-17-8-7-12-23(32)29(35)38-24(21-10-9-11-22(31)19-21)15-13-20-14-16-25(36-4)26(18-20)37-5/h9-11,14,16,18-19,23-24H,6-8,12-13,15,17,31H2,1-5H3/t23-,24+/m0/s1
Chemical Name

[(1R)-1-(3-aminophenyl)-3-(3,4-dimethoxyphenyl)propyl] (2S)-1-(3,3-dimethyl-2-oxopentanoyl)piperidine-2-carboxylate
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 The three fused scout fragments, KB02, KB03, and KB05, exhibit broad cysteine reactivity in the human proteome and cover two distinct electrophile groups (chloroacetamide and acrylamide). These fragments bind tightly and selectively to the SLF ligand, which is bound to the cytosolic prolyl isomerase FKBP12, which has been widely employed in research on ligand-induced protein degradation[3].
References

[1]. FKBP Ligands-Where We Are and Where to Go? Front Pharmacol. 2018 Dec 5;9:1425.

[2]. Creating diverse target-binding surfaces on FKBP12: synthesis and evaluation of a rapamycin analogue library. ACS Comb Sci. 2011 Sep 12;13(5):486-95.

[3]. Electrophilic PROTACs that degrade nuclear proteins by engaging DCAF16. Nat Chem Biol. 2019 Jul;15(7):737-746.


Solubility Data


Solubility (In Vitro) DMSO : 100 mg/mL (190.60 mM)
Solubility (In Vivo) Solubility in Formulation 1: ≥ 2.08 mg/mL (3.96 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.08 mg/mL (3.96 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.9060 mL 9.5302 mL 19.0603 mL
5 mM 0.3812 mL 1.9060 mL 3.8121 mL
10 mM 0.1906 mL 0.9530 mL 1.9060 mL
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.