13949-89-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13949-89-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,9,4 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 13949-89:
(7*1)+(6*3)+(5*9)+(4*4)+(3*9)+(2*8)+(1*9)=138
138 % 10 = 8
So 13949-89-8 is a valid CAS Registry Number.
13949-89-8Relevant articles and documents
Quinone-capped Porphyrins: Synthesis and some Chemical Properties
Ganesh, K. Nagappa,Sanders, Jeremy K. M.
, p. 1611 - 1616 (2007/10/02)
The 2,5-bis(hydroxyethyl) and 2,5-bis(hydroxypropyl) derivatives of hydroquinone bis(methoxymethyl) ether have been synthesised and used to 'cap' mesoporphyrin-II.Deprotection, oxidation, and metallation gave the title compounds.Several anomalous reactivi