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143287-27-8

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143287-27-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143287-27-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,2,8 and 7 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 143287-27:
(8*1)+(7*4)+(6*3)+(5*2)+(4*8)+(3*7)+(2*2)+(1*7)=128
128 % 10 = 8
So 143287-27-8 is a valid CAS Registry Number.

143287-27-8Relevant articles and documents

Reactions of 4-heteromethylene- and 4-heteroethylidene-2-phenyl-2-oxazolin-5-ones with different nucleophiles and related studies

Homami, Seyed-Saied,Mukerjee, Arya K

, p. 411 - 414 (2007/10/02)

4-Ethoxymethylene-2-phenyl-2-oxazolin-5-one (1a) reacts with primary amines to form 4-aminmethylene derivatives 2 which in turn undergo base-aided thiolysis of the 1,5-bond affording thioesters of 3-amino-2-benzoylaminoacrylic acids (4). 4-Ethoxyethyliden

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