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87109-17-9

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87109-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87109-17-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,1,0 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 87109-17:
(7*8)+(6*7)+(5*1)+(4*0)+(3*9)+(2*1)+(1*7)=139
139 % 10 = 9
So 87109-17-9 is a valid CAS Registry Number.

87109-17-9Relevant articles and documents

Synthesis of a caryophyllene isoprenologue, a potential diterpene natural product

Hinkley, Simon F.R.,Perry, Nigel B.,Weavers, Rex T.

, p. 3671 - 3680 (2007/10/03)

(-)-β-Caryophyllene has been converted into three stereoisomers of a new bicyclic compound that is structurally related to the known macrocyclic diterpene, flexibilene, in the same way β-caryophyllene is related to humulene. Key steps are selective cleava

STEREO-CONTROLLED SYNTHESIS OF γ,δ-UNSATURATED KETONES BY THE HORNER-WITTIG REACTION

Cornish, Christopher A.,Warren, Stuart

, p. 2603 - 2606 (2007/10/02)

E and Z isomers of γ,δ-unsaturated ketals may separately be prepared by the Horner-Wittig reaction between 5-diphenyl-phosphinoylpentan-2-one ethylene acetal (6) and aldehydes, esters, or ketones.

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