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3799-87-9

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3799-87-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3799-87-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,9 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3799-87:
(6*3)+(5*7)+(4*9)+(3*9)+(2*8)+(1*7)=139
139 % 10 = 9
So 3799-87-9 is a valid CAS Registry Number.

3799-87-9Relevant articles and documents

Preparation method of L-tyrosine derivative

-

, (2021/06/09)

The invention discloses a preparation method of an L-tyrosine derivative. The L-tyrosine derivative is O-alkyl-N-[fluorenylmethoxycarbonyl]-L-tyrosine, L-tyrosine is used as a starting material, the O-alkyl-N-[fluorenylmethoxycarbonyl]-L-tyrosine is prepared through esterification, amidation, etherification/hydrolysis and amidation in sequence, the total yield of the target product can reach 61.5%, and the ee value can reach 99% or above. The preparation method disclosed by the invention has the advantages of cheap and easily available raw materials, lower cost and the like, for example, separation of triphenylphosphine oxide is avoided through etherification reaction. The method has the advantages of simple process, short route, mild reaction conditions and the like, for example, etherification and hydrolysis adopt a one-pot method; and the whole technological process generates few three wastes, the product yield and purity are high, and the method is suitable for industrial production.

Click-to-Release from trans-Cyclooctenes: Mechanistic Insights and Expansion of Scope from Established Carbamate to Remarkable Ether Cleavage

Versteegen, Ron M.,ten Hoeve, Wolter,Rossin, Raffaella,de Geus, Mark A. R.,Janssen, Henk M.,Robillard, Marc S.

supporting information, p. 10494 - 10499 (2018/08/17)

The bioorthogonal cleavage of allylic carbamates from trans-cyclooctene (TCO) upon reaction with tetrazine is widely used to release amines. We disclose herein that this reaction can also cleave TCO esters, carbonates, and surprisingly, ethers. Mechanistic studies demonstrated that the elimination is mainly governed by the formation of the rapidly eliminating 1,4-dihydropyridazine tautomer, and less by the nature of the leaving group. In contrast to the widely used p-aminobenzyloxy linker, which affords cleavage of aromatic but not of aliphatic ethers, the aromatic, benzylic, and aliphatic TCO ethers were cleaved as efficiently as the carbamate, carbonate, and esters. Bioorthogonal ether release was demonstrated by the rapid uncaging of TCO-masked tyrosine in serum, followed by oxidation by tyrosinase. Finally, tyrosine uncaging was used to chemically control cell growth in tyrosine-free medium.

SOLID PHASE SYNTHESIS OF TYROSINE-CONTAINING HISTONE FRAGMENTS

Giralt, Ernest,Andreu, David,Miro, Pere,Pedroso, Enrique

, p. 3185 - 3188 (2007/10/02)

The solid phase synthesis of Ac-Val-Val-Tyr-Ala-Leu-OH (1), Ac-Glu-Ala-Tyr-Leu-Val-OH (2) and Ac-Leu-Tyr-Gly-Phe-Gly-Gly-OH (3), segments 86-90 of histone H4, 97-101 of histone H3 and 97-102 of histone H4, respectively, is described using chloromethylresin and chloromethyl-Pab-resin as solid supports.In the synthesis of peptides 2 and 3 using 2,6-dichlorobenzyl ether as tyrosine side chain protection, 7percent and 8percent of the 3-dichlorobenzyltyrosine-rearranged peptide could be isolated by Bio-Gel P-2 or diethylaminoethylcellulose chromatography.Alternative use of cyclohexyl ether as tyrosine protection has been explored with satisfactory results.

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