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77878-52-5

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77878-52-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77878-52-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,7 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77878-52:
(7*7)+(6*7)+(5*8)+(4*7)+(3*8)+(2*5)+(1*2)=195
195 % 10 = 5
So 77878-52-5 is a valid CAS Registry Number.

77878-52-5Relevant articles and documents

(1RS,4SR,5RS)-4-(5-Hydroxy-4,8-dimethyl-7-nonen-1-yl)-4-methyl-3,8-dioxabicyclooctane-1-acetic Acid from Geraniol

Hajos, Zoltan G.,Wachter, Michael P.,Werblood, Harvey M.,Adams, Richard E.

, p. 2600 - 2608 (2007/10/02)

(E)-Geraniol (4) has been converted via 13 steps involving epoxidations, hydrolytic epoxide ring opening, and two ring closures to the key intermediate 3,8-dioxabicyclooctane alcohol 10 having stereochemical integrity at all three centers of asymmetry.Extension of the three-carbon side chain of 10 and attachment of the acetic acid side chain at C-1 in nine steps completed the geraniol-based total synthesis of the zoapatanol related bicyclic acid 3.The total synthesis of 3 from the ketal-ketone 5 has also been described.

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