Cas 189025-37-4,Undecanoic acid, 11-(triphenylphosphoranylidene)-, ethyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 189025-37-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,0,2 and 5 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 189025-37:
(8*1)+(7*8)+(6*9)+(5*0)+(4*2)+(3*5)+(2*3)+(1*7)=154
154 % 10 = 4
So 189025-37-4 is a valid CAS Registry Number.

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2416-20-8 (11Z)-hexadec-11-enoic acid

189025-37-4Relevant articles and documents

Synthesis of 13-oxo-(Z)-9-octadecenoic acid and 15-oxo-(Z)-11-icosenoic acid, arrestants of Oryzaephilus surinamensis L.

Nakajima,Okamura,Takeda,Sugawa,Tateishi,Iwasa,Baba

, p. 551 - 552 (2007/10/03)

Two arrestants of the sawtoothed grain beetle (Oryzaephilus surinamensis L.), 13-oxo-(Z)-9-octadecenoic acid and 15-oxo-(Z)-11-icosenoic acid, were synthesized for the first time by utilizing a Z-selective Wittig reaction.

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189025-37-4