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113953-99-4

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113953-99-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 113953-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,3,9,5 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 113953-99:
(8*1)+(7*1)+(6*3)+(5*9)+(4*5)+(3*3)+(2*9)+(1*9)=134
134 % 10 = 4
So 113953-99-4 is a valid CAS Registry Number.

113953-99-4Downstream Products

113953-99-4Relevant articles and documents

An efficient and versatile synthesis of all structural types of acylpolyamine spider toxins

Nihei, Ken-ichi,Kato, Massuo J.,Yamane, Tetsuo,Konno, Katsuhiro

, p. 8335 - 8350 (2007/10/03)

An efficient and versatile synthesis of acylpolyamine spider toxins of all structural types classified by extensive MS analysis has been achieved. By using 2-nitrobenzenesulfonamide as an effective activating and/or protecting group (the Nosyl strategy),

Practical, convergent total synthesis of polyamine amide spider toxin NSTX-3

Blagbrough, Ian S.,Moya, Eduardo,Walford, Steven P.

, p. 551 - 554 (2007/10/02)

A practical, total synthesis of polyamine amide spider toxin NSTX-3, a potent glutamate receptor antagonist with potential as a neuroprotective agent, is reported. The unsymmetrical polyamine moiety was built by a conjugate addition to afford putreanine and regioselective acylation of L-asparaginyl-cadaverine.

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