90548-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90548-23-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,4 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90548-23:
(7*9)+(6*0)+(5*5)+(4*4)+(3*8)+(2*2)+(1*3)=135
135 % 10 = 5
So 90548-23-5 is a valid CAS Registry Number.
90548-23-5Relevant articles and documents
Total Synthesis of (+)-Polyzonimine
Sugahara, Tsutomu,Komatsu, Yuuki,Takano, Seiichi
, p. 214 - 215 (1984)
(+)-Polyzonimine (1), a terpenoid insect repellent produced by a millipede, was synthesized by a reaction sequence which utilizes the asymmetric sigmatropic rearrangement of the ammonium ylide formed from the salt (10) to generate the chiral interme