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1170669-31-4

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1170669-31-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1170669-31-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,7,0,6,6 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1170669-31:
(9*1)+(8*1)+(7*7)+(6*0)+(5*6)+(4*6)+(3*9)+(2*3)+(1*1)=154
154 % 10 = 4
So 1170669-31-4 is a valid CAS Registry Number.

1170669-31-4Downstream Products

1170669-31-4Relevant articles and documents

One-step synthesis of N-acetylcysteine and glutathione derivatives using the Ugi reaction

Zhdanko, Alexander G.,Gulevich, Anton V.,Nenajdenko, Valentine G.

experimental part, p. 4692 - 4702 (2009/10/02)

Fully protected natural and unnatural N-acetylcysteine, dipeptide Cys-Gly, glutathione, and homoglutathione derivatives were synthesized by the Ugi four-component reaction using various benzylthio aldehydes and ketones as carbonyl building blocks. The scope and limitations of the method were investigated. Formation of imidazoline by-products in the Ugi reaction was discussed. 2,2,2-Trifluoroethanol was shown to be a superior reaction media than methanol in some reactions. Also, the 4-methyl-2,6,7-trioxabicyclo[2.2.2]octyl derivative (OBO-ester) of isocyanoacetic acid was shown to be superior to use than ethyl isocyanoacetate as a peptide synthesis precursor in cases when higher reactivity of an isocyanide is required.

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