1338989-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1338989-91-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,9,8 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1338989-91:
(9*1)+(8*3)+(7*3)+(6*8)+(5*9)+(4*8)+(3*9)+(2*9)+(1*1)=225
225 % 10 = 5
So 1338989-91-5 is a valid CAS Registry Number.
1338989-91-5Relevant academic research and scientific papers
Improved synthesis of C8-C20 segment of pectenotoxin-2
Fujiwara, Kenshu,Suzuki, Yuki,Koseki, Nao,Murata, Shun-Ichi,Murai, Akio,Kawai, Hidetoshi,Suzuki, Takanori
, p. 5589 - 5592 (2011/11/07)
The C8-C20 segment of pectenotoxin-2 was efficiently synthesized in 16% overall yield in 22 steps from l-malic acid via an improved route.
