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250207-23-9

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250207-23-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 250207-23-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,2,0 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 250207-23:
(8*2)+(7*5)+(6*0)+(5*2)+(4*0)+(3*7)+(2*2)+(1*3)=89
89 % 10 = 9
So 250207-23-9 is a valid CAS Registry Number.

250207-23-9Relevant articles and documents

Pheromone synthesis, CXCVI. Synthesis of germacrene-B and its extension to the synthesis of (±)-9-methylgermacrene-B, the racemate of the male- produced sex pheromone of the sandfly Lutzomyia longipalpis from Lapinha, Brazil

Muto, Shin-Etsu,Nishimura, Yutaka,Mori, Kenji

, p. 2159 - 2165 (2007/10/03)

Both germacrene-B (2) and 9-methylgermacrene-B [(±)-1] were synthesized by employing cyclization reactions [8 → 9 and (±)-20 → (±)-21] as the key steps. The latter [(±)-1] was shown to be the racemate of the male-produced sex pheromone of the sandfly Lutz

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