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(3R,5S,6R)-5,7-Bis-benzyloxy-3-tert-butoxycarbonylamino-6-hydroxy-heptanoic acid methyl ester is a complex organic compound with the molecular formula C26H37NO7. It is a chiral molecule, meaning it has a non-superimposable mirror image, and it is characterized by its specific stereochemistry, with three chiral centers at the 3rd, 5th, and 6th carbon atoms. The compound features a heptanoic acid backbone, which is a seven-carbon chain, and includes a methyl ester group, a tert-butoxycarbonyl (Boc) protecting group, and two benzyl ether protecting groups. The Boc group is commonly used in peptide synthesis to protect the amino group, while benzyl ethers are used to protect hydroxyl groups. (3R,5S,6R)-5,7-Bis-benzyloxy-3-tert-butoxycarbonylamino-6-hydroxy-heptanoic acid methyl ester is likely used in the synthesis of more complex molecules, such as peptides or other biologically active compounds, where the protecting groups are strategically added and removed at different stages of the synthesis process to control the reactivity of specific functional groups.

90987-32-9

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90987-32-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90987-32-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,8 and 7 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 90987-32:
(7*9)+(6*0)+(5*9)+(4*8)+(3*7)+(2*3)+(1*2)=169
169 % 10 = 9
So 90987-32-9 is a valid CAS Registry Number.

90987-32-9Relevant academic research and scientific papers

Synthesis and Absolute Configuration of the p-Nitrobenzyl Ester of SQ 27860

Miyashita, Masaaki,Chida, Noritaka,Yoshikoshi, Akira

, p. 195 - 196 (1984)

Transformation of D-glucosamine into the p-nitrobenzyl ester (2) of SQ 27860 is described, revealing the absolute configuration of this carbapenem antibiotic as (1).

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