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DOTA-mono-NHS-tris(t-Bu ester)(B-270), also known as B-270, is a chemical compound derived from the chelating agent DOTA, featuring a mono-NHS (N-Hydroxysuccinimide) functional group for biomolecule modification. The tris(t-Bu ester) groups offer protection that can be removed under mild conditions to reveal reactive NHS esters, making B-270 a versatile reagent in various applications within chemistry, biochemistry, and medical fields.

819869-77-7

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  • tert-butyl 2-{4,7-bis[2-(tert-butoxy)-2-oxoethyl]-10-{2-[(2,5-dioxopyrrolidin-1-yl)oxy]-2-oxoethyl}-1,4,7,10-tetraazacyclododecan-1-yl}acetate

    Cas No: 819869-77-7

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  • 1,4,7,10-Tetraazacyclododecane-1,4,7-triacetic acid, 10-[2-[(2,5-dioxo-1-pyrrolidinyl)oxy]-2-oxoethyl]-, tris(1,1-dimethylethyl) ester

    Cas No: 819869-77-7

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819869-77-7 Usage

Uses

Used in Radiopharmaceutical Synthesis:
DOTA-mono-NHS-tris(t-Bu ester)(B-270) is used as a chelating agent for the synthesis of radiopharmaceuticals in the medical industry. It facilitates the attachment of radionuclides to biomolecules, enabling the development of imaging agents and targeted therapies for various diseases.
Used in Drug Delivery Systems:
In the pharmaceutical industry, DOTA-mono-NHS-tris(t-Bu ester)(B-270) is used as a component in drug delivery systems. It aids in the conjugation of therapeutic agents to targeting molecules, enhancing the specificity and efficiency of drug delivery to desired sites within the body.
Used in Diagnostic Assays:
DOTA-mono-NHS-tris(t-Bu ester)(B-270) is utilized as a reagent in the development of diagnostic assays. Its ability to bind with various biomolecules allows for the creation of sensitive and specific tests for detecting diseases or monitoring biological processes.
Used in Protein Interaction Studies:
In the field of biochemistry, DOTA-mono-NHS-tris(t-Bu ester)(B-270) is used as a research tool for studying protein interactions. Its reactive NHS ester group allows for the covalent attachment of proteins to other molecules or surfaces, providing insights into protein function and interactions.
Used in Biomolecule Conjugation:
DOTA-mono-NHS-tris(t-Bu ester)(B-270) is employed as a conjugation reagent across various scientific disciplines. Its reactive group enables the attachment of biomolecules to different substrates, such as nanoparticles or solid supports, for applications in biosensing, immunoassays, and other bioanalytical techniques.

Check Digit Verification of cas no

The CAS Registry Mumber 819869-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,9,8,6 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 819869-77:
(8*8)+(7*1)+(6*9)+(5*8)+(4*6)+(3*9)+(2*7)+(1*7)=237
237 % 10 = 7
So 819869-77-7 is a valid CAS Registry Number.

819869-77-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name DOTA-tris-tBu-ester NHS

1.2 Other means of identification

Product number -
Other names 1,4-Dihydro-4-imino-1-methyl-pyridin

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:819869-77-7 SDS

819869-77-7Relevant articles and documents

RGD-cyclam conjugate: Synthesis and potential application for positron emission tomography

Galibert, Mathieu,Jin, Zhao-Hui,Furukawa, Takako,Fukumura, Toshimitsu,Saga, Tsuneo,Fujibayashi, Yasuhisa,Dumy, Pascal,Boturyn, Didier

, p. 5422 - 5425 (2010)

Cyclam and DOTA-containing positron emission tomography radiotracers were prepared by using a modular chemical strategy based on peptide synthesis and chemoselective ligations. These molecules encompass two functional domains, one a tumour 'homing' domain and the other a chelating ligand for copper allowing nuclear imaging of tumours.

A bimodal MRI and NIR liposome nanoprobe for tumor targeted molecular imaging

Wang, Huihui,Wu, Hao,Shen, Hujun,Geng, Shaote,Wang, Beibei,Wang, Yanfang,Ma, Xiaojun,Li, Guohui,Tan, Mingqian

supporting information, p. 8832 - 8841 (2015/11/24)

The combination of complementary MRI and NIR imaging methods evolved to provide an even more powerful bioimaging tool. Herein, a novel bimodal MRI/NIR nanoprobe GCF-HDA was prepared via a facile self-assembly approach of three types of amphiphilic structures in aqueous solution. The Stokes shift of the NIR moiety increased from 30 to 150 nm and fluorescence quantum yield increased from 1.5 to 8% after conjugation with electron-rich hexadecylamine (HDA) to organic dye Cy7. The photostability of the nanoprobe GCF-HDA was dramatically improved after involving the newly synthesized dye. Molecular dynamics simulation demonstrated that the GCF-HDA is composed of 2.0-3.5 nm clusters and in each cluster the head groups of the amphiphilic molecules assemble together and the tail groups point outwards. The r1 and r2 relaxivities of GCF-HDA were found to be 11.87 and 19.91 mM-1 s-1 per Gd(iii) chelate at 0.5 T, respectively. In vitro cellular imaging with human glioma U-87 MG cells showed that the GCF-HDA was able to enter the cells and accumulate in the cytoplasm. The targeted GCF-HDA resulted in higher MR contrast enhancement and stronger fluorescence intensity than the corresponding non-targeted probe GC-HDA in the tumor tissue 96 hours post injection. Ex vivo fluorescence imaging and histological analysis of the tumor tissue further confirmed the specific binding ability of the GCF-HDA.

Conjugates of the B-subunit of shiga toxin for use as contrasting agents for imaging and therapy

-

, (2014/06/24)

Multivalent conjugates comprising the following formula: (STxB-linker A-S)x-GNS-(S-linker B-T)y wherein STxB is the B-subunit of Shiga toxin; linker A is a noncleavable linker; linker B is a cleavable linker used to release at least

CONJUGATES OF THE B-SUBUNIT OF SHIGA TOXIN FOR USE AS CONTRASTING AGENTS FOR IMAGING AND THERAPY

-

, (2014/06/24)

Multivalent conjugates comprising the following formula: (STxB-linker A-S)x-GNS-(S-linker B-T)y wherein STxB is the B-subunit of Shiga toxin; linker A is a noncleavable linker; linker B is a cleavable linker used to release at least

LDL-based nanoparticles for contrast enhanced MRI of atheroplaques in mouse models

Yamakoshi, Yoko,Qiao, Hui,Lowell, Andrew N.,Woods, Mark,Paulose, Betty,Nakao, Yuka,Zhang, Hualei,Liu, Ting,Lund-Katz, Sissel,Zhou, Rong

, p. 8835 - 8837 (2011/09/21)

A LDL particle functionalized with a GdDO3A-monoamide chelate with a long alkenyl anchor (GdDO3A-OA) was prepared for in vivo detection of atheroplaques. The GdDO3A-OA, when successfully intercalated into the lipid layer of LDL particles, led to a signifi

CASCADE MACROMOLECULAR CONTRAST AGENTS FOR MEDICAL IMAGING

-

Page/Page column 22, (2010/11/28)

The present invention provides macromolecular contrast media for diagnostic imaging modalities.

Multimodal image-guided enzyme/prodrug cancer therapy

Li, Cong,Winnard Jr., Paul T.,Takagi, Tomoyo,Artemov, Dmitri,Bhujwalla, Zaver M.

, p. 15072 - 15073 (2007/10/03)

The conjugate of bacterial cytosine deaminase (bCD) and poly-l-lysine (PLL) that was functionalized with biotin, rhodamine, and Gd3+-DOTA was synthesized and characterized. It demonstrated high relaxivity, improved enzymatic specificity to prodrug 5-fluorocytosine, low cytotoxicity, efficient cell uptake, and high enzymatic stability in fresh mouse serum and human breast cancer cell culture. Copyright

Process for making a chelating agent for labeling biomolecules using preformed active esters

-

Page column 11, (2008/06/13)

The present invention is directed, in general, to a method for making high yields of functionalized cyclic or acyclic tertiary amine-containing compounds, termed active esters, the functionalized compounds themselves, and diagnostic or therapeutic systems incorporating such compounds. Ester groups are attached to all but one of its Nitrogen atoms of the tertiary amine-containing compound. Therefore, an active agent, in the presence of coupling agent, attaches to the remaining amine via a carboxylate group attached to the amine, to produce high yields of the active ester. The active ester is then combined with a biomolecule, to produce high yields of a bioconjugated product. A metal ion may be chelated to the bioconjugated product to produce a chelating agent for use in either diagnostic or therapeutic applications.

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