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34815-78-6

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34815-78-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34815-78-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,8,1 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 34815-78:
(7*3)+(6*4)+(5*8)+(4*1)+(3*5)+(2*7)+(1*8)=126
126 % 10 = 6
So 34815-78-6 is a valid CAS Registry Number.

34815-78-6Downstream Products

34815-78-6Relevant articles and documents

Acetolysis of 2-Aryl-1-methylpropyl Systems: Mechanism of the Formation of the Retained Product without Neighbouring Group Participation

Kinoshita, Tomomi,Takemoto, Masaki,Shibayama, Koichi,Takeuchi, Ken'ichi

, p. 2153 - 2174 (2007/10/02)

threo-2--1-(13C)methylpropyl p-bromobenzenesulphonate (threo-(13C)1-OBs) has been solvolyzed in acetic acid to give rise to the retained threo-1-OAc which contains a small amount of threo-(13C)1-OAc accompanying no 13C-scrambling.At 75percent conversion, the isomerized erythro-1-OBs has been obtained along with the unchanged threo-1-OBs.Also, the erythro-1-OTs has been found at 50percent conversion in the presence of NaOTs.These stereochemical results indicate strongly that the acetate with the retained configuration accompanying no 13C-scrambling is formed via isomerization of the substrate by inversive anion exchange and a successive ks pathway with configurational inversion.Such a retained product was not detected in the acetolysis of threo-1-methyl-2-phenylpropyltoluene-p-sulphonate with no electron withdrawing substituent.

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