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458531-56-1

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458531-56-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 458531-56-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,8,5,3 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 458531-56:
(8*4)+(7*5)+(6*8)+(5*5)+(4*3)+(3*1)+(2*5)+(1*6)=171
171 % 10 = 1
So 458531-56-1 is a valid CAS Registry Number.

458531-56-1Downstream Products

458531-56-1Relevant articles and documents

Concise total synthesis of (+)-carpamic acid

Randl, Stefan,Blechert, Siegfried

, p. 1167 - 1169 (2007/10/03)

We report herein an efficient enantioselective synthesis of (+)-carpamic acid, with nine steps as the longest linear sequence, the key strategy being based on a novel sequence of a cross-metathesis (CM) reaction and a subsequent cyclizing reductive amination to form the piperidine ring.

Palladium-catalyzed formation and stereoselective isomerization of 5- vinyloxazolines. Application to the formal synthesis of (S,S)-4-amino-3- hydroxy-5-phenylpentanoic acid

Cook,Shanker

, p. 3405 - 3408 (2007/10/03)

Vinyloxazolidinones have been found to undergo Pd(0)-catalyzed ionization followed by loss of carbon dioxide and subsequent cyclization to form vinyloxazolines. The reaction occurred under mild conditions, and enhancement of diastereomeric ratios with chiral substrates was obtained. 4- Benzyl-5-vinyloxazoline prepared by this method has been utilized in the stereoselective synthesis of (S,S)-4-amino-3-hydroxy-5-phenylpentanoic acid (AHPPA).

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