31317-17-6 Usage
Purification Methods
2,3-Dimethylbenzothiophene [31317-17-6] M 212.3, m 69-70o, b 123-124o/10mm, n D 1.6171. Fractionate it through a 90cm Monel spiral column, or other efficient fractionating or spinning band column and collect the middle fraction. It has also been purified by chromatography on basic alumina using pentane as eluent. [Tedjanulia et al. J Heterocycl Chem 20 1485 1983, Beilstein 17 III/IV 161.]
Check Digit Verification of cas no
The CAS Registry Mumber 31317-17-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,3,1 and 7 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 31317-17:
(7*3)+(6*1)+(5*3)+(4*1)+(3*7)+(2*1)+(1*7)=76
76 % 10 = 6
So 31317-17-6 is a valid CAS Registry Number.
31317-17-6Relevant articles and documents
SCHWEFELVERBINGUNGEN DES ERDOELS XVIII. DIALKYLDIBENZOTHIOPHENE
Boberg, Friedrich,Bruns, Wolfgang,Musshoff, Dagmar
, p. 113 - 122 (2007/10/02)
The preparation of 2,8-, 2,6-, 2,3- and 4,6-dialkyldibenzothiophenes and of the corresponding 5,5-dioxides is described. 1H-NMR-data and GC-purities are given. Key words: Dimethyldibenzothiophenes; diethyldibenzothiophenes; 2,8-dipropyldibenzothiophene; 2,8-dibutyldibenzothiophene; 2,8-diisobutyldibenzothiophene; 3-ethyl-2-methyldibenzothiophene; dialkkyldibenzothiophene-5,5-dioxides.