158549-74-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158549-74-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,5,4 and 9 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 158549-74:
(8*1)+(7*5)+(6*8)+(5*5)+(4*4)+(3*9)+(2*7)+(1*4)=177
177 % 10 = 7
So 158549-74-7 is a valid CAS Registry Number.
158549-74-7Relevant articles and documents
Reactions of Substituted Diacetylenic 1,2-Diols in the Presence of Hg(II) or Cu(I) Chlorides
Wichert-Tur, Z.
, p. 33 - 43 (2007/10/02)
Unknown so far 2,5,5-trisubstituted 3-acylmethylene-2,3-dihydro furans (2) are obtained by reacting upon some vicinal diols (1) with HgCl2, in methanolic solutions.It is found that the reaction path depends on varied substituents and, especially, on the s
