189223-83-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189223-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,2,2 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 189223-83:
(8*1)+(7*8)+(6*9)+(5*2)+(4*2)+(3*3)+(2*8)+(1*3)=164
164 % 10 = 4
So 189223-83-4 is a valid CAS Registry Number.
189223-83-4Relevant academic research and scientific papers
A formal synthesis of brassinolide
Schmittberger,Uguen
, p. 2837 - 2840 (2007/10/03)
Enzyme-catalysed differentiation of hydroxy groups in a C(2υ)-shaped tetraol-sulfide, combined with a E-stereoconvergent Ramberg-Backlund process, allowed to prepare pure (2S))-2,3-dimethyl-1-iodobutane, which could be copled with a 3,5-cyclopregnane-20-t
