1289639-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1289639-42-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,8,9,6,3 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1289639-42:
(9*1)+(8*2)+(7*8)+(6*9)+(5*6)+(4*3)+(3*9)+(2*4)+(1*2)=214
214 % 10 = 4
So 1289639-42-4 is a valid CAS Registry Number.
1289639-42-4Relevant articles and documents
A convenient synthesis and some characteristic reactions of novel propiolamidinium salts
Weingaertner, Werner,Kantlehner, Willi,Maas, Gerhard
, p. 265 - 272 (2011/03/19)
Starting from N,N,N,N,N,N-hexaalkylguanidinium chlorides and terminal alkynes, a series of new orthoamide derivatives of alkynecarboxylic acids were prepared. The orthoamides were converted into propiolamidinium chlorides by reaction with benzoyl chloride
