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136489-92-4

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136489-92-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136489-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,4,8 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 136489-92:
(8*1)+(7*3)+(6*6)+(5*4)+(4*8)+(3*9)+(2*9)+(1*2)=164
164 % 10 = 4
So 136489-92-4 is a valid CAS Registry Number.

136489-92-4Upstream product

136489-92-4Downstream Products

136489-92-4Relevant articles and documents

Total Synthesis of 6-Deoxy-6-aminoheptopyranuronic Acid Derivatives

Casiraghi, Giovanni,Colombo, Lino,Rassu, Gloria,Spanu, Pietro

, p. 6523 - 6527 (2007/10/02)

Two enantio couples of terminal C-glycoyranosyl α-amino acids, namely the aminopyranuronic acid, L-9, D-9 and L-10, D-10, hve been synthesized from serine-derived pair L-2, D-2 by exploiting enantiomerically pure butenolide intermediates 3 and 4.The key synthetic steps involved the sequential antiselective cis dihydroxylation of the butenolide double bond and the clean furaose-to-pyranose ring expansion to construct the sugar skeleton with the proper stereochemistry.In our best performance, homogeneous L-9 was prepared from L-2 in four steps and 10 reactions in 20percent overall yield.

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