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81734-58-9

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81734-58-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81734-58-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,3 and 4 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81734-58:
(7*8)+(6*1)+(5*7)+(4*3)+(3*4)+(2*5)+(1*8)=139
139 % 10 = 9
So 81734-58-9 is a valid CAS Registry Number.

81734-58-9Relevant articles and documents

NEW SIMPLE METHOD FOR THE SYNTHESIS OF CIS-STILBENES

Merkushev, E. B.,Skorokhodova, T. S.

, p. 308 - 311 (2007/10/02)

A new method involving catalytic acetylenic condensation as the key stage was developed for the synthesis of cis-stilbenes.Subsequent selective hydrogenation of the synthesized alkyltolanes over Pd-CaCO3 gave a series of alkyl-substituted stilbenes. 1,8-Dimethylphenanthrene was obtained from o-iodotoluene.

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