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40838-18-4

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40838-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40838-18-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,8,3 and 8 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 40838-18:
(7*4)+(6*0)+(5*8)+(4*3)+(3*8)+(2*1)+(1*8)=114
114 % 10 = 4
So 40838-18-4 is a valid CAS Registry Number.

40838-18-4Relevant articles and documents

Synthesis of α-bromoisolevoglucosenone and its cyclopenta annulation

Biktagirov,Faizullina,Salikhov,Safarov,Valeev

, p. 1317 - 1322 (2015/01/08)

4,4-Dimethyl-3-nitro-10,11-dioxatricyclo[6.2.1.02,6]undec-5-en-7-one possessing a bicyclic iridoid skeleton was synthesized in two steps from isolevoglucosenone which was obtained in turn from levoglucosenone through 4-benzyloxy-2-tosyloxy deri

Synthesis of 1,6-Anhydro-2-chloro-2,3,4-trideoxy-β-D-erythro-hex-3-enopyranose and its Stereospecific SN2' Substitution

Matsumoto, Masakatsu,Ishikawa, Hiromi,Soya, Yoshihiro,Ozawa, Takayuki

, p. 2377 - 2382 (2007/10/02)

The chlorination of 1,6-anhydro-3,4-dideoxy-β-D-threo-hex-3-enopyranose (2) with SOCl2 and pyridine gives predominantly 1,6-anhydro-2-chloro-β-D-erythro-hex-3-enopyranose (3).The chloride (3) takes place exclusively the suprafacial SN2' substit

Ein einfacher Weg von Glucal zu Cerny-Epoxiden

Lauer, Gilbert,Oberdorfer, Franz

, p. 271 - 272 (2007/10/02)

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