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135489-38-2

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135489-38-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135489-38-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,4,8 and 9 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 135489-38:
(8*1)+(7*3)+(6*5)+(5*4)+(4*8)+(3*9)+(2*3)+(1*8)=152
152 % 10 = 2
So 135489-38-2 is a valid CAS Registry Number.

135489-38-2Relevant articles and documents

A CONVENIENT PREPARATION OF STERICALLY CROWDED 1,9-DISUBSTITUTED DIBENZOTHIOPHENES AND 3,3'-DISUBSTITUTED DIARYL SULFIDES

Furukawa, Naomichi,Kimura, Takeshi,Horie, Yoji,Ogawa, Satoshi

, p. 675 - 678 (2007/10/02)

Thianthrene-5-oxide (1) reacted with 2.2 equivalents of lithium diisopropylamide to give 4,6-dilithiated 1 which was converted to 4,6-disubstituted thianthrene-5-oxides (3). 3 afforded sterically crowded 1,9-disubstituted dibenzothiophenes (4) in moderate yields on treatment with n-butyllithium or phenyllithium.

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