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158719-53-0

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158719-53-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158719-53-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,7,1 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 158719-53:
(8*1)+(7*5)+(6*8)+(5*7)+(4*1)+(3*9)+(2*5)+(1*3)=170
170 % 10 = 0
So 158719-53-0 is a valid CAS Registry Number.

158719-53-0Downstream Products

158719-53-0Relevant articles and documents

Highly Diastereoselective Synthesis of 2-Oxazoline-4-carboxylates by Formal Cycloadditions of a 5-Alkoxyoxazole with α-Alkoxy Aldehydes Catalyzed by Tin(IV) Chloride

Suga, Hiroyuki,Fujieda, Hiroki,Hirotsu, Yoshihiro,Ibata, Toshikazu

, p. 3359 - 3364 (2007/10/02)

The formal cycloaddition of 5-methoxy-2-(p-methoxyphenyl)oxazole with 2(S)-(benzyloxy)propanal and 2(S)-propanal in the presence of tin(IV) chloride gave cis-(4R,5S,1'S)- and trans-(4S,5S,1'S)-5-(1'-alkoxyethyl)-4-(methoxycarbonyl)-2-(p-methoxyphenyl)-2-oxazolines with high diastereoselectivity (94 and 92percent selectivity, respectively).A similar reaction of 5-methoxy-2-(p-methoxyphenyl)oxazole with 2,3-di-O-benzyl-D-glyceraldehyde gave methyl cis-(4S,5R,1'R)-2-(p-methoxyphenyl)-5--2-oxazoline-4-carboxylate with high diastereoselectivity (>95percent selectivity), and the latter was easily converted to biologically important chiral 2-amino-1,3,4,5-tetrol derivatives.

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