143883-37-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143883-37-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,8,8 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 143883-37:
(8*1)+(7*4)+(6*3)+(5*8)+(4*8)+(3*3)+(2*3)+(1*7)=148
148 % 10 = 8
So 143883-37-8 is a valid CAS Registry Number.
143883-37-8Relevant articles and documents
A convenient synthesis of benzofuran-3-carboxyaldehydes
Deshpande, A. R.,Paradkar, M. V.
, p. 526 - 528 (2007/10/02)
The benzofuran-3-acetic acids (3a-c) on treatment with pyridine N-oxide give benzofuran-3-carboxyaldehydes (5a-c) on reduction with NaBH4 in methanol yields naturally occurring benzofuran 6a which is converted into 6b and 6c by the literature method.