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668988-24-7

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668988-24-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 668988-24-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,8,9,8 and 8 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 668988-24:
(8*6)+(7*6)+(6*8)+(5*9)+(4*8)+(3*8)+(2*2)+(1*4)=247
247 % 10 = 7
So 668988-24-7 is a valid CAS Registry Number.

668988-24-7Relevant articles and documents

A versatile synthesis of α-amino acid derivatives via the ugi four-component condensation with a novel convertible isonitrile

Rikimaru, Kentaro,Yanagisawa, Barata,Kan, Toshiyuki,Fukuyama, Tohru

experimental part, p. 403 - 417 (2009/09/08)

The Ugi four-component condensation (4CC) reaction with the carbonate-type isonitrile 9 proceeded smoothly, and subsequent base treatment of the Ugi products 10 provided the N-acyloxazolidinones 11 in high yield. The N-acyloxazolidinone derivatives can be reacted with several hetero-nucleophiles, namely, reaction of 11 with thiolates gave thiol ester derivatives 16 efficiently.

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