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66854-78-2

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66854-78-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66854-78-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,5 and 4 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 66854-78:
(7*6)+(6*6)+(5*8)+(4*5)+(3*4)+(2*7)+(1*8)=172
172 % 10 = 2
So 66854-78-2 is a valid CAS Registry Number.

66854-78-2Relevant articles and documents

Carbonyldiimidazole (CDI) mediated synthesis of Nα- protected amino acid azides: Application to the one-pot preparation of ureidopeptides

Vasantha,Vishwanatha,Sureshbabu, Vommina V.

experimental part, p. 1093 - 1098 (2012/06/01)

Synthesis of Nα-protected amino acyl azides starting from corresponding acids via the carbonyldiimidazole (CDI) activation is described. The protocol is extended for a one-pot preparation of ureido peptides that circumvents the isolation of acy

2(3H)-and 2(5H)-furanones. VIII. Preparation and α nucleophilicity of (S)-γ-isopropyl-α-methyl-β-tetramic acid

Toyooka, Naoki,Nishio, Morihiro,Shinoda, Hiroyuki,Momose, Takefumi

, p. 1427 - 1431 (2007/10/03)

An efficient preparation of (S)-γ-isopropyl-α-methyl-β-tetramic acid has been established, and the α nucleophilicity of the acid has been also examined.

Enantioselective and diastereoselective formation of syn-3-hydroxy-4-amino acids (syn-statines) via tetramic acids

Schmidt,Riedl,Haas,Griesser,Vetter,Weinbrenner

, p. 216 - 220 (2007/10/02)

Enantiomerically pure pyrrolidine-2,4-diones (tetramic acids) which can be diastereoselectively hydrogenated to syn-statines (4-amino-3-hydroxy-6-methylheptanoic acids) have been prepared by catalytic hydrogenation of 4-(benzyloxycarbonylamino)-3-oxocarboxylic acid esters.

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