142545-23-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142545-23-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,5,4 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142545-23:
(8*1)+(7*4)+(6*2)+(5*5)+(4*4)+(3*5)+(2*2)+(1*3)=111
111 % 10 = 1
So 142545-23-1 is a valid CAS Registry Number.
142545-23-1Relevant articles and documents
The total synthesis of L-daunosamine
Jurczak, Janusz,Kozak, Janusz,Golebiowski, Adam
, p. 4231 - 4238 (2007/10/02)
N,O-Dibenzyl-N-tert-butoxycarbonyl-L-homoserinal (7), obtained from L-aspartic acid, reacts with vinylmagnesium chloride to afford with high stereoselectivity compound 6 which is subsequently transformed into the derivative of L
