128683-38-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128683-38-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,8 and 3 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 128683-38:
(8*1)+(7*2)+(6*8)+(5*6)+(4*8)+(3*3)+(2*3)+(1*8)=155
155 % 10 = 5
So 128683-38-5 is a valid CAS Registry Number.
128683-38-5Relevant articles and documents
New Entry to the Perhydrofurofuran Ring System
Kido, Fusao,Sinha, Subhash C.,Abiko, Toshiya,Watanabe, Masataka,Yoshikoshi, Akira
, p. 418 - 420 (2007/10/02)
Treatment of the α-diazomalonate (6) with Rh2(OAc)4 stereoselectively provided substituted valerolactones (7) and (7') via the sigmatropic rearrangement of a nine-membered cyclic allylsulphonium ylide; the rearrangement product was converted to 5-alk
