84939-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84939-50-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,9,3 and 9 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 84939-50:
(7*8)+(6*4)+(5*9)+(4*3)+(3*9)+(2*5)+(1*0)=174
174 % 10 = 4
So 84939-50-4 is a valid CAS Registry Number.
84939-50-4Relevant academic research and scientific papers
SYNTHESIS OF OPTICALLY ACTIVE AZETIDIN-2-ONES FROM L-THREONINE
Yanagisawa, Hiroaki,Ando, Akiko,Shiozaki, Masao,Hiraoka, Tetsuo
, p. 1037 - 1040 (2007/10/02)
3S-(1R-Hydroxyethyl)-4R-phenylsulfonylazetidin-2-one derivative was synthesized from L-threonine in an 8-step process including the novel transformation of the oxirane ring to the azetidin-2-one.
