345623-23-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 345623-23-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,5,6,2 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 345623-23:
(8*3)+(7*4)+(6*5)+(5*6)+(4*2)+(3*3)+(2*2)+(1*3)=136
136 % 10 = 6
So 345623-23-6 is a valid CAS Registry Number.
345623-23-6Relevant articles and documents
Reactions of Allylidenephosphoranes with Heterocumulenes,I. - Vinylketenimines
Capuano, Lilly,Willmes, Arnold
, p. 80 - 86 (2007/10/02)
According to their α-substituent the allylidenephosphoranes 4 are converted by isocyanates either via Wittig reaction into the hitherto little known vinylketenimines 7 or by carbamoylation and ring closure into the pyrrolone 5 or the 3-pyridylidenephospho
