84939-31-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 84939-31-1 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, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 84939-31:
(7*8)+(6*4)+(5*9)+(4*3)+(3*9)+(2*3)+(1*1)=171
171 % 10 = 1
So 84939-31-1 is a valid CAS Registry Number.
84939-31-1Relevant articles and documents
SYNTHESIS OF OPTICALLY ACTIVE AZETIDIN-2-ONES FROM L-THREONINE
Yanagisawa, Hiroaki,Ando, Akiko,Shiozaki, Masao,Hiraoka, Tetsuo
, p. 1037 - 1040 (1983)
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.