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1383380-99-1

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1383380-99-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1383380-99-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,3,3,8 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1383380-99:
(9*1)+(8*3)+(7*8)+(6*3)+(5*3)+(4*8)+(3*0)+(2*9)+(1*9)=181
181 % 10 = 1
So 1383380-99-1 is a valid CAS Registry Number.

1383380-99-1Upstream product

1383380-99-1Downstream Products

1383380-99-1Relevant articles and documents

Piperazine amide linker for cyclative cleavage from solid support: Traceless synthesis of dihydroquinoxalin-2-ones

Neagoie, Cleopatra,Krchnak, Viktor

, p. 399 - 402 (2012)

A piperazine amide linker for cyclative cleavage from solid support and its use in the traceless solid-phase synthesis of dihydroquinoxalinones are described. Piperazine was attached to Wang resin via a carbamate linkage and acylated with Fmoc-amino acids. Following Fmoc group removal, resin-bound amines were reacted with 1-fluoro-2-nitrobenzenes. The nitro group of the resulting 2-nitroanilines was reduced, and acyclic precursors, in contrast to traditional ester-type linkage, remained attached to the resin. Target dihydroquinoxalinones were obtained either by acid- or microwave-mediated cyclative cleavage. The synthesis provided crude compounds of high purity and enabled the preparation of stable immobilized linear intermediates. The linker is suitable for combinatorial synthesis of compound libraries.

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