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191731-16-5

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191731-16-5 Usage

General Description

Tert-butyl (S)-4-(Cbz-amino)-5-methyl-3-oxohexanoate is a chemical compound often used in organic synthesis and pharmaceutical research. It is a derivative of (S)-amino acid and is commonly referred to as a tert-butyl ester. It is known for its ability to efficiently protect amino groups in peptide synthesis and other organic reactions. The compound is typically used as a reagent in the production of peptide-based drugs and as a building block for various pharmaceuticals. Additionally, it is often utilized in the development of new synthetic methods and in the preparation of reference standards for analytical testing.

Check Digit Verification of cas no

The CAS Registry Mumber 191731-16-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,7,3 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 191731-16:
(8*1)+(7*9)+(6*1)+(5*7)+(4*3)+(3*1)+(2*1)+(1*6)=135
135 % 10 = 5
So 191731-16-5 is a valid CAS Registry Number.
InChI:InChI=1/C19H27NO5/c1-13(2)17(15(21)11-16(22)25-19(3,4)5)20-18(23)24-12-14-9-7-6-8-10-14/h6-10,13,17H,11-12H2,1-5H3,(H,20,23)/t17-/m0/s1

191731-16-5Relevant articles and documents

Improved synthesis of rupintrivir

Lin, Daizong,Qian, Wangke,Hilgenfeld, Rolf,Jiang, Hualiang,Chen, Kaixian,Liu, Hong

experimental part, p. 1101 - 1107 (2012/09/08)

An improved synthesis of rupintrivir (AG7088) was accomplished using three amino acids (l-glutamic acid, d-4-fluorophenylalanine, and l-valine) as the building blocks. The key fragment ketomethylene dipeptide isostere was constructed with the valine derivative and phenylpropionic acid derivative, followed by coupling with a lactam derivative and an isoxazole acid chloride to provide AG7088 totally in eight steps.

An efficient synthesis of γ-amino β-ketoester by cross-Claisen condensation with α-amino acid derivatives

Honda, Yutaka,Katayama, Satoshi,Kojima, Mitsuhiko,Suzuki, Takayuki,Izawa, Kunisuke

, p. 3163 - 3166 (2007/10/03)

Cross-ester condensation between N-protected amino acid ester and the lithium enolate prepared from alkyl acetate gave the corresponding β-ketoester in high yield without the formation of the tertiary alcohol that is commonly seen as by-product. This inte

Pentapeptides as antitumor agents

-

, (2008/06/13)

The present invention provides anti-tumor peptides of Formula I, and the acid salts thereof. A is an amino acid residue of the formula (CH3)2 N--CHX--CO, wherein X is a normal or branched alkyl group. B is an amino acid residue s

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