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34044-18-3

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34044-18-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34044-18-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,0,4 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 34044-18:
(7*3)+(6*4)+(5*0)+(4*4)+(3*4)+(2*1)+(1*8)=83
83 % 10 = 3
So 34044-18-3 is a valid CAS Registry Number.

34044-18-3Downstream Products

34044-18-3Relevant articles and documents

Synthesis and NMR investigation of selenobutyl substituted silanes and oligosilanes

Herzog

, p. 379 - 388 (2007/10/03)

The reaction of BuSeLi, made from BuLi and elemental selenium, with chlorosilanes MexPhySiCl4-x-y led to selenobutyl substituted derivatives. In the cases of polychlorosilanes formation of the completely substituted products MexPhySi(SeBu)4-x-y are favoured. Higher yields of partially substituted products could be obtained by reaction of chlorosilanes with BuSeH/NEt3. Besides monosilanes the reactions of several methylchlorodi-, tri- and isotetrasilanes with BuSeLi and BuSeH/NEt3 were also investigated. In SiClMe(SiClMe2)2 the chlorine substituent at the middle silicon atom is substituted by BuSeH/NEt3 at first selectively. All products were characterized by 1H, 13C, 29Si and 77Se NMR and trends of chemical shifts and coupling constants (1JSiSi, 1JSiSe, 2JSiSe) with the substitution pattern were investigated. Wiley-VCH Verlag GmbH, 2000.

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