I-CBP112
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MedKoo CAT#: 407287

CAS#: 1640282-31-0

Description: I-CBP112 is a selective inhibitor of the bromodomain-containing transcription factors CREBBP (CBP) and EP300 (IC50 = 0.142 and 0.625 μM, respectively). I-CBP112 has little activity against other bromodomains at concentrations up to 1 mM. I-CBP112 targets the CBP/p300 bromodomains. I-CBP112 significantly reduced the leukemia-initiating potential of MLL-AF9(+) acute myeloid leukemia cells in a dose-dependent manner in vitro and in vivo. Interestingly, I-CBP112 increased the cytotoxic activity of BET bromodomain inhibitor JQ1 as well as doxorubicin.


Chemical Structure

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I-CBP112
CAS# 1640282-31-0

Theoretical Analysis

MedKoo Cat#: 407287
Name: I-CBP112
CAS#: 1640282-31-0
Chemical Formula: C27H36N2O5
Exact Mass: 468.26
Molecular Weight: 468.594
Elemental Analysis: C, 69.21; H, 7.74; N, 5.98; O, 17.07

Price and Availability

Size Price Availability Quantity
100mg USD 1550 2 Weeks
200mg USD 2650 2 Weeks
500mg USD 3850 2 Weeks
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Synonym: I-CBP112; I-CBP-112; I-CBP 112.

IUPAC/Chemical Name: (S)-1-(7-(3,4-dimethoxyphenyl)-9-((1-methylpiperidin-3-yl)methoxy)-2,3-dihydrobenzo[f][1,4]oxazepin-4(5H)-yl)propan-1-one

InChi Key: YKNAKDFZAWQEEO-IBGZPJMESA-N

InChi Code: InChI=1S/C27H36N2O5/c1-5-26(30)29-11-12-33-27-22(17-29)13-21(20-8-9-23(31-3)24(14-20)32-4)15-25(27)34-18-19-7-6-10-28(2)16-19/h8-9,13-15,19H,5-7,10-12,16-18H2,1-4H3/t19-/m0/s1

SMILES Code: CCC(N1CCOC2=C(OC[C@@H]3CN(C)CCC3)C=C(C4=CC=C(OC)C(OC)=C4)C=C2C1)=O

Appearance: Solid powder

Purity: >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).

Solubility: 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: 2934.99.9001

More Info: CREBBP (CBP) and EP300 are general transcriptional co-activators, which are involved in many biological processes like maintenance of genomic stability by affecting DNA replication and DNA repair as well as cell growth, transformation and development. They also plays and essential role in neuronal plasticity/ memory formation, hematopoiesis and energy homeostasis as demonstrated in a variety of mouse models. By acetylation of non-histone proteins CREBBP can have a positive or negative effect on transcriptional regulation affecting protein- protein interactions, protein-DNA interactions, nuclear retention or protein half-life. Mutations of CREBBP and EP300 lead to Rubinstein-Taybi syndrome (RTS), characterised by growth retardation, facial abnormalities, organ abnormalities, mental retardation and proneness to tumors. Chromosomal translocations of CREBBP or EP300 with MOZ, MLL have been observed in acute myeloid leukemia. CREBBP has also been associated with Amyotrophic lateral sclerosis (ALS), Lou Gherig’s disease, a neurodegenerative disease with progressive degeneration of motor neurons in the brain and spinal cord, Alzheimer's disease and polyglutamine diseases such as Spinal and Bulbar Muscular Atrophy and Huntington’s disease (http://www.thesgc.org/chemical-probes/I-CBP112)

Product Data:
Biological target: I-CBP112 is a specific and potent acetyl-lysine competitive protein-protein interaction inhibitor, that inhibits the CBP/p300 bromodomains, enhances acetylation by p300.
In vitro activity: The inhibition of this demethylase in the presence of I-CBP112 prevented the repression of ABCC1 and ABCC10 and, to a considerable extent, cancer cells' sensitization to drugs. In conclusion, the CBP/p300 bromodomain inhibitor I-CBP112 can be considered as a potent anti-multidrug-resistance agent, capable of repressing key ABC transporters responsible for drug efflux in various cancer types. Reference: Cancers (Basel). 2021 Sep 14;13(18):4614. https://pubmed.ncbi.nlm.nih.gov/34572840/
In vivo activity: TBD

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
Solubility
DMSO 63.0 134.44
Ethanol 94.0 200.60
Water 94.0 200.60

Preparing Stock Solutions

The following data is based on the product molecular weight 468.59 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.

Recalculate based on batch purity %
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
Formulation protocol: 1. Strachowska M, Gronkowska K, Michlewska S, Robaszkiewicz A. CBP/p300 Bromodomain Inhibitor-I-CBP112 Declines Transcription of the Key ABC Transporters and Sensitizes Cancer Cells to Chemotherapy Drugs. Cancers (Basel). 2021 Sep 14;13(18):4614. doi: 10.3390/cancers13184614. PMID: 34572840; PMCID: PMC8467251. 2. Zucconi BE, Makofske JL, Meyers DJ, Hwang Y, Wu M, Kuroda MI, Cole PA. Combination Targeting of the Bromodomain and Acetyltransferase Active Site of p300/CBP. Biochemistry. 2019 Apr 23;58(16):2133-2143. doi: 10.1021/acs.biochem.9b00160. Epub 2019 Apr 11. PMID: 30924641; PMCID: PMC6948846.
In vitro protocol: 1. Strachowska M, Gronkowska K, Michlewska S, Robaszkiewicz A. CBP/p300 Bromodomain Inhibitor-I-CBP112 Declines Transcription of the Key ABC Transporters and Sensitizes Cancer Cells to Chemotherapy Drugs. Cancers (Basel). 2021 Sep 14;13(18):4614. doi: 10.3390/cancers13184614. PMID: 34572840; PMCID: PMC8467251. 2. Zucconi BE, Makofske JL, Meyers DJ, Hwang Y, Wu M, Kuroda MI, Cole PA. Combination Targeting of the Bromodomain and Acetyltransferase Active Site of p300/CBP. Biochemistry. 2019 Apr 23;58(16):2133-2143. doi: 10.1021/acs.biochem.9b00160. Epub 2019 Apr 11. PMID: 30924641; PMCID: PMC6948846.
In vivo protocol: TBD

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1: Picaud S, Fedorov O, Thanasopoulou A, Leonards K, Jones K, Meier J, Olzscha H,
Monteiro O, Martin S, Philpott M, Tumber A, Filippakopoulos P, Yapp C, Wells C,
Che KH, Bannister A, Robson S, Kumar U, Parr N, Lee K, Lugo D, Jeffrey P, Taylor
S, Vecellio ML, Bountra C, Brennan PE, O'Mahony A, Velichko S, Müller S, Hay D,
Daniels DL, Urh M, La Thangue NB, Kouzarides T, Prinjha R, Schwaller J, Knapp S.
Generation of a Selective Small Molecule Inhibitor of the CBP/p300 Bromodomain
for Leukemia Therapy. Cancer Res. 2015 Dec 1;75(23):5106-19. doi:
10.1158/0008-5472.CAN-15-0236. Epub 2015 Nov 9. PubMed PMID: 26552700.