90652-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90652-18-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,5 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 90652-18:
(7*9)+(6*0)+(5*6)+(4*5)+(3*2)+(2*1)+(1*8)=129
129 % 10 = 9
So 90652-18-9 is a valid CAS Registry Number.
90652-18-9Relevant academic research and scientific papers
AN EFFICIENT CARBAPENEM SYNTHESIS VIA AN INTRAMOLECULAR WITTIG REACTION OF NEW TRIALKOXYPHOSPHORANE-THIOLESTERS
Yoshida, Akira,Tajima, Yawara,Takeda, Noriko,Oida, Sadao
, p. 2793 - 2796 (2007/10/02)
New trialkoxyphosphorane-thiolesters 10, obtained by reaction of oxalimides 9 with trialkyl phosphite, were efficiently cyclized by an intramolecular Wittig reaction to give carbapenems 11.
