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143961-89-1

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143961-89-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143961-89-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,9,6 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 143961-89:
(8*1)+(7*4)+(6*3)+(5*9)+(4*6)+(3*1)+(2*8)+(1*9)=151
151 % 10 = 1
So 143961-89-1 is a valid CAS Registry Number.

143961-89-1Relevant articles and documents

An efficient synthesis of the piperazinone fragment of pseudotheonamide A1 via a stereoselective intramolecular Michael ring closure

Shioiri, Takayuki,Irako, Naoko

, p. 130 - 131 (2007/10/03)

The stereoselective intramolecular Michael ring closure of the dipeptide efficiently gives the piperazinone fragment of pseudotheonamide A1, a serine protease inhibitor from the marine sponge Theonella swinhoei.

Synthese von Cyclotheonamid B und Derivaten

Deng, Jingen,Hamada, Yasumasa,Shioiri, Takayuki,Matsunaga, Shigeki,Fusetani, Nobuhiro

, p. 1811 - 1813 (2007/10/02)

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