27949-39-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 27949-39-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,9,4 and 9 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 27949-39:
(7*2)+(6*7)+(5*9)+(4*4)+(3*9)+(2*3)+(1*9)=159
159 % 10 = 9
So 27949-39-9 is a valid CAS Registry Number.
27949-39-9Relevant articles and documents
An improved pathway to 6,6-disubstituted fulvenes
Chajara, Khalil,Ottosson, Henrik
, p. 6741 - 6744 (2007/10/03)
Pentafulvenes with alkyl and/or aryl substituents at the exocyclic position are formed rapidly in high yields through reaction of crystalline sodium cyclopentadienide directly with the appropriate ketones.