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113009-22-6

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113009-22-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 113009-22-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,0,0 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 113009-22:
(8*1)+(7*1)+(6*3)+(5*0)+(4*0)+(3*9)+(2*2)+(1*2)=66
66 % 10 = 6
So 113009-22-6 is a valid CAS Registry Number.

113009-22-6Relevant articles and documents

Synthesis of 6,6-Pentamethylene-2-aminosuberic Acid. A Key Intermediate in the Synthesis of Dicarba Analogues of Vasopressin Antagonists

Callahan, James F.,Newlander, Kenneth A.,Bryan, Heidemarie G.,Huffman, William F.,Moore, Michael L.,Yim, Nelson C. F.

, p. 1527 - 1530 (2007/10/02)

Two complementary syntheses of the unnatural amino acid, 6,6-cyclopentamethylene-2-aminosuberic acid, Pas (2) are described.The first, starting from methyl cyclohexanecarboxylate (4), yields in ten steps racemic Boc-Pas(OBzl)-OH (3) which is suitably protected for solid phase peptide synthesis.The second method involves the stereospecific synthesis of optically pure Boc-Pas(OBzl)-OH (3L) utilizing the electrochemical coupling, via the Kolbe method of the monobenzyl ester of 1,1-cyclohexanediacetic acid (13) and Boc-L-Glu-OBzl (14).The optical purity of 3L was confirmed by chiral gas chromatographic analysis of its N-pentafluoropropionyl diisopropyl ester derivative 15L.

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