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1026489-01-9

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1026489-01-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1026489-01-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,6,4,8 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1026489-01:
(9*1)+(8*0)+(7*2)+(6*6)+(5*4)+(4*8)+(3*9)+(2*0)+(1*1)=139
139 % 10 = 9
So 1026489-01-9 is a valid CAS Registry Number.

1026489-01-9Relevant articles and documents

A general synthetic route towards γ- and δ-lactones. Total asymmetric synthesis of (-)-muricatacin and the mosquito oviposition pheromone (5R, 6s)- 6-acetoxy-hexadecanolide

Couladourosand, Elias A.,Mihou, Anastasia P.

, p. 4861 - 4862 (2007/10/03)

Five (or six) membered asymmetric lactones are synthesized from γ- butyrolactone (or δ-valerolactone) in a straightforward way using the following reaction sequence: reduction, Wittig-Schlosser coupling, Sharpless asymmetric dihydroxylation, oxidation and lactonization. Thus, (-)muricatacin is synthesized in six steps (43% overall yield). Furthermore, (5R,6S)-6- acetoxy-hexadecanolide is prepared in eight steps (38% overall yield) via a carbonate ester, utilizing a novel lactonization with inversion of stereochemistry.

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