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1421257-49-9

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1421257-49-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1421257-49-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,2,5 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1421257-49:
(9*1)+(8*4)+(7*2)+(6*1)+(5*2)+(4*5)+(3*7)+(2*4)+(1*9)=129
129 % 10 = 9
So 1421257-49-9 is a valid CAS Registry Number.

1421257-49-9Relevant articles and documents

Synthesis of the ABCDEF-ring of ciguatoxin 3C

Sato, Takuto,Nogoshi, Keisuke,Goto, Akiyoshi,Domon, Daisuke,Kawamura, Natsumi,Nomura, Yoshitaka,Sato, Daisuke,Tanaka, Hideki,Murai, Akio,Katoono, Ryo,Kawai, Hidetoshi,Suzuki, Takanori,Fujiwara, Kenshu,Kondo, Yoshihiko,Akiba, Uichi

, p. 703 - 726 (2017/01/16)

The synthesis of the ABCDEF-ring of ciguatoxin 3C was achieved via a route that included anion coupling of a dimethyldithioacetal mono-S-oxide derivative corresponding to the AB-ring and an aldehyde corresponding to the EF-ring, followed by cyclization us

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