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873786-87-9

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873786-87-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 873786-87-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,3,7,8 and 6 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 873786-87:
(8*8)+(7*7)+(6*3)+(5*7)+(4*8)+(3*6)+(2*8)+(1*7)=239
239 % 10 = 9
So 873786-87-9 is a valid CAS Registry Number.

873786-87-9Relevant articles and documents

A synthesis of levetiracetam based on (S)-N-phenylpantolactam as a chiral auxiliary

Boschi, Francesca,Camps, Pelayo,Comes-Franchini, Mauro,Munoz-Torrero, Diego,Ricci, Alfredo,Sanchez, Laura

, p. 3739 - 3745 (2005)

The synthesis of levetiracetam and its enantiomer by deracemization of (±)-2-bromobutyric acid using either (S)- or (R)-N-phenylpantolactam as chiral auxiliaries, followed by SN2 substitution of the bromine atom by a 2-oxopyrrolidin-1-yl group and amidation of the carboxylic acid, is described.

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