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168134-59-6

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168134-59-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 168134-59-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,8,1,3 and 4 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 168134-59:
(8*1)+(7*6)+(6*8)+(5*1)+(4*3)+(3*4)+(2*5)+(1*9)=146
146 % 10 = 6
So 168134-59-6 is a valid CAS Registry Number.

168134-59-6Relevant articles and documents

An improved synthesis and resolution of (±)-cis,cis-2,2'-spirobiindane-1,1'-diol

Nieman,Keay

, p. 1575 - 1583 (1995)

(±)-cis,cis-2,2'-spirobiindane-1,1'-diol (1) is synthesized stereoselectively in four steps beginning with 1-indanone in 68% overall yield. An improved resolution of diol 1 is described by preparing and separating diastereomeric mono-esters of 1 using (2S)-O-(tert-butyldimethylsilyl)mandeloyl chloride (10).

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