945489-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 945489-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,5,4,8 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 945489-21:
(8*9)+(7*4)+(6*5)+(5*4)+(4*8)+(3*9)+(2*2)+(1*1)=214
214 % 10 = 4
So 945489-21-4 is a valid CAS Registry Number.
945489-21-4Relevant articles and documents
Preference of 4-exo ring closure in copper-catalyzed intramolecular coupling of vinyl bromides with alcohols
Fang, Yewen,Li, Chaozhong
, p. 8092 - 8093 (2007)
The copper-catalyzed intramolecular O-vinylation of γ-bromohomoallylic alcohols was investigated. With 10 mol % of CuI as the catalyst and 20 mol % of 1,10-phenanthroline as the ligand, the reactions of 3-bromo-3-buten-1-ols in refluxing CH3CN