1253189-51-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1253189-51-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,3,1,8 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1253189-51:
(9*1)+(8*2)+(7*5)+(6*3)+(5*1)+(4*8)+(3*9)+(2*5)+(1*1)=153
153 % 10 = 3
So 1253189-51-3 is a valid CAS Registry Number.
1253189-51-3Relevant articles and documents
Palladium-catalyzed Sonogashira coupling of aryl mesylates and tosylates
Choy, Pui Ying,Chow, Wing Kin,So, Chau Ming,Lau, Chak Po,Kwong, Fuk Yee
, p. 9982 - 9985 (2010)
Up to speed: The first general and mild protocol for the Sonogashira coupling of aryl mesylates is presented (see scheme). The coupling intermediate also provides facile access to 2-substituted isoquinolines.
