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(S)-2-tert-Butoxycarbonylamino-succinic acid bis-[2-(4-acetyl-2-nitro-phenyl)-ethyl] ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

156589-18-3

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156589-18-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156589-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,5,8 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 156589-18:
(8*1)+(7*5)+(6*6)+(5*5)+(4*8)+(3*9)+(2*1)+(1*8)=173
173 % 10 = 3
So 156589-18-3 is a valid CAS Registry Number.

156589-18-3Relevant academic research and scientific papers

2-(4-acetyl-2-nitrophenyl)ethyl: A new base-labile carboxyl protecting group

Robles,Pedroso,Grandas

, p. 1261 - 1266 (2007/10/02)

A new base-labile carboxyl protecting group, the 2-(4-acetyl-2-nitrophenyl)ethyl (Anpe) group is reported and compared with other base-labile protecting groups. The synthesis of the alcohol precursor, 1-[4-(2-hydroxyethyl)-3-nitrophenyl]-1-ethanone, the amino acid derivatives Boc-Asp(Anpe)-OH and Boc-Glu(Anpe)-OH and the conditions under which the carboxyl protecting group can be eliminated are also described.

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