1229578-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1229578-67-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,9,5,7 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1229578-67:
(9*1)+(8*2)+(7*2)+(6*9)+(5*5)+(4*7)+(3*8)+(2*6)+(1*7)=189
189 % 10 = 9
So 1229578-67-9 is a valid CAS Registry Number.
1229578-67-9Relevant articles and documents
Total synthesis of Hirtellanine A
Zheng, Shu-Yan,Shen, Zheng-Wu
, p. 2883 - 2887 (2010)
The first total synthesis of hirtellanines A is described. The key transformations include (i) base-mediated regioselective pyran ring formation, (ii) one-pot sequential boronation and Suzuki-Miyaura cross-coupling, and (iii) a tandem acid-induced deprotection and subsequent tautomerizations.