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14665-97-5

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14665-97-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14665-97-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,6,6 and 5 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 14665-97:
(7*1)+(6*4)+(5*6)+(4*6)+(3*5)+(2*9)+(1*7)=125
125 % 10 = 5
So 14665-97-5 is a valid CAS Registry Number.

14665-97-5Relevant articles and documents

The 1-(3,5-Di-tert-butylphenyl)-1-methylethoxycarbonyl (t-Bumeoc) Residue, a Protecting Group Cleavable under Extremely Mild Acidic Conditions

Voelter, Wolfgang,Mueller, Juergen

, p. 248 - 260 (2007/10/02)

The synthesis of 1-(3,5-di-tert-butylphenyl)-1-methylethoxycarbonyl fluoride (8) and its reaction with selected amino acids as well as the 13C NMR spectroscopic characterization of t-Bumeoc derivatives are described.The new protecting group is cleavable under very mild acidic conditions.The kinetics of the cleavage is studied by high-performance liquid chromatography (HPLC).The utility of the t-Bumeoc compared to the Adpoc protecting group is demonstrated taking a derivative of the molluscan neuropeptide as an example.

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