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253662-96-3

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253662-96-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 253662-96-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,6,6 and 2 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 253662-96:
(8*2)+(7*5)+(6*3)+(5*6)+(4*6)+(3*2)+(2*9)+(1*6)=153
153 % 10 = 3
So 253662-96-3 is a valid CAS Registry Number.

253662-96-3Relevant articles and documents

A direct and selective syntheses of α,α-dichloro-and α-chloro-ethyl ketones by the reaction of alkyl carboxylates with 1,1-dichloroethyllithium

Shiina, Isamu,Imai, Yumiko,Kagayama, Akifumi,Mukaiyama, Teruaki

, p. 190 - 191 (2000)

1,1-Dichloroethyllithium (5), generated by treating 1,1-dichloroethane (4) with lithium diisopropylamide (LDA) or n-butyllithium, reacted with alkyl carboxylates to afford the corresponding α,α-dichloro-or α-monochloro-ethyl ketones selectively in good to

An effective method for the preparation of optically active polyoxy 8-membered ring enone corresponding to the B ring of taxol

Shiina, Isamu,Shibata, Jun,Imai, Yumiko,Ibuka, Ryoutarou,Fujisawa, Hidehiko,Hachiya, Iwao,Mukaiyama, Teruaki

, p. 1145 - 1146 (2007/10/03)

An effective method for the preparation of 8-membered ring enone 1 in sufficient quantities was developed. First, optically active trialkoxyaldehyde 3 was prepared by diastereoselective dihydroxylation of olefin 7 derived from D-pantolactone. Secondly, 8-

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