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17983-33-4

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17983-33-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17983-33-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,9,8 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 17983-33:
(7*1)+(6*7)+(5*9)+(4*8)+(3*3)+(2*3)+(1*3)=144
144 % 10 = 4
So 17983-33-4 is a valid CAS Registry Number.

17983-33-4Relevant articles and documents

Silicon-based aromatic transferring linkers for traceless solid-phase synthesis of aryl-, polyaryl-, and heteroaryl-containing compounds

Lee,Silverman

, p. 5339 - 5352 (2001)

A number of arylsilane-based linkers are prepared for traceless solid-phase synthesis. General methodologies for introduction of the silyl group and various functional groups to aromatic, polyaromatic, and heteroaromatic rings are developed. Also, broad u

Rapid, high-yield, solid-phase synthesis of the antitumor antibiotic sansalvamide a using a side-chain-tethered phenylalanine building block

Lee, Younghee,Silverman, Richard B.

, p. 3743 - 3746 (2007/10/03)

(matrix presented) A 10-step solid-phase synthesis of the cytotoxic depsipeptide sansalvamide A (1) has been accomplished in an overall yield of 67% with >95% purity employing polymer-bound phenylalanine building block 2. Both the N- and C-termini of 2 are extended followed by on-resin head-to-tail macrocyclization of the linear peptide in a high yield. This should be a general stategy for the synthesis of diverse libraries of cyclic peptides and depsipeptides that contain exclusively phenylalanine and other hydrophobic side chains.

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