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159487-17-9

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159487-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159487-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,4,8 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 159487-17:
(8*1)+(7*5)+(6*9)+(5*4)+(4*8)+(3*7)+(2*1)+(1*7)=179
179 % 10 = 9
So 159487-17-9 is a valid CAS Registry Number.

159487-17-9Relevant academic research and scientific papers

Simple and rapid synthesis of Nα-urethane protected β-amino alcohols and peptide alcohols employing HATU

Surcshbabu, Vommina V.,Sudarshan,Chennakrishnareddy

experimental part, p. 574 - 579 (2009/12/06)

The activation of the Nα--urcihanc protected (Fmoc-/Boc-/Z-/Bsmoc) α-amino acids employing l-[bis(dimethylamino)- methylene]-lH-l,2,3-triazolo-[4,5-6]pyridinium.0hexa-flurophosphate-3-oxide (HATU) followed by reduction of the in situ generated -OAt ester with NaBH 4 results in the corresponding ss-amino alcohols in good yields. This synthesis is the first demonstration of the application of the efficient coupling agent HATU for practical synthesis of ss-amino alcohols. The protocol is general for all common N-protecting groups including the highly base sensitive Bsmoc group. The protocol has also been successfully extended for the synthesis of peptide alcohols.

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