1620300-59-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1620300-59-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,0,3,0 and 0 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1620300-59:
(9*1)+(8*6)+(7*2)+(6*0)+(5*3)+(4*0)+(3*0)+(2*5)+(1*9)=105
105 % 10 = 5
So 1620300-59-5 is a valid CAS Registry Number.
1620300-59-5Relevant articles and documents
Iridium-Catalyzed Cycloisomerization of Alkynoic Acids: Synthesis of Unsaturated Lactones
Huang, Yi,Zhang, Xianghe,Dong, Xiu-Qin,Zhang, Xumu
, p. 782 - 788 (2020/01/08)
The iridium-catalyzed cycloisomerization of various alkynoic acids was successfully developed, and a series of five-, six-, and especially seven-membered unsaturated lactones were constructed with moderate yields and excellent regioselectivities (up to 68
