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82309-95-3

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82309-95-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 82309-95-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,3,0 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 82309-95:
(7*8)+(6*2)+(5*3)+(4*0)+(3*9)+(2*9)+(1*5)=133
133 % 10 = 3
So 82309-95-3 is a valid CAS Registry Number.

82309-95-3Relevant articles and documents

Synthesis and Determination of the Absolute Configuration of the Proximal (S,S)-1,1'-Dimethyl-2,2'-spirobiindane

Lemmen, Peter

, p. 1902 - 1910 (2007/10/02)

The proximal (S,S)-1,1'-dimethyl-2,2'-spirobiindane (1a) is synthesized as the racemic mixture and with more then 98.5percent optical purity.Its absolute configuration is determined by the path of synthesis.Key-steps are the trans-alkylation of 3 yielding

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