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(2S,3R)-3-Hydroxy-2-((R)-3-mercapto-2-{(R)-3-mercapto-2-[(R)-3-mercapto-2-methyl-2-(3-phenyl-propionylamino)-propionylamino]-2-methyl-propionylamino}-2-methyl-propionylamino)-N-methyl-butyramide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

249749-40-4

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249749-40-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 249749-40-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,9,7,4 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 249749-40:
(8*2)+(7*4)+(6*9)+(5*7)+(4*4)+(3*9)+(2*4)+(1*0)=184
184 % 10 = 4
So 249749-40-4 is a valid CAS Registry Number.

249749-40-4Relevant academic research and scientific papers

Total synthesis of thiangazole

Akaji, Kenichi,Kiso, Yoshiaki

, p. 10685 - 10694 (2007/10/03)

A method for total synthesis of thiangazole (1), a tris-thiazoline- oxazole metabolite, is described. The key intermediate 9, a linear tetrapeptide amide composed of three S-benzyl-2-methylcysteine residues and a O-benzyl-threonine amide, was synthesized in 4 steps using 2-chloro-1,3- dimethyl-imidazolidium hexafluorophosphate(CIP)mediated activation. The successive thiazoline/oxazole rings were constructed by TiCl4mediated cycledehydration followed by acid-catalyzed Robinson-Gabriel reaction without difficulty.

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