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1443999-14-1

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1443999-14-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1443999-14-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,3,9,9 and 9 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1443999-14:
(9*1)+(8*4)+(7*4)+(6*3)+(5*9)+(4*9)+(3*9)+(2*1)+(1*4)=201
201 % 10 = 1
So 1443999-14-1 is a valid CAS Registry Number.

1443999-14-1Downstream Products

1443999-14-1Relevant articles and documents

Facile synthesis of N-substituted amides from alcohols and amides

Okada, Iku,Chiba, Kazuhiro,Kitano, Yoshikazu

, p. 1069 - 1075 (2013/06/05)

A facile and versatile method for preparing N-substituted amides from alcohols and amides using a Bronsted acid and an alkali metal halide has been developed. Treatment of tertiary alcohols and amides in the presence of an alkali metal halide or methanesulfonic acid in trifluoroacetic acid at elevated temperature afforded the corresponding N-substituted amides in moderate to high yields. Tertiary alcohols with various functional groups such as ether, ester, imide, carbamate, and halogen groups were tolerated under these conditions. This method can be used for the efficient and practical synthesis of various N-substituted formamides without the use of unmanageable cyano compounds. Georg Thieme Verlag Stuttgart New York.

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