454442-05-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 454442-05-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,4,4,4 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 454442-05:
(8*4)+(7*5)+(6*4)+(5*4)+(4*4)+(3*2)+(2*0)+(1*5)=138
138 % 10 = 8
So 454442-05-8 is a valid CAS Registry Number.
454442-05-8Relevant articles and documents
Synthesis of C15,C14′-ring locked all-trans-β-carotene
Reddy, Pulgam Veera,Borhan, Babak
, p. 3867 - 3869 (2007/10/03)
Synthesis of C15,14′-ring locked all-trans-β-carotene is described. The symmetric nature of the β-carotene analog allowed for rapid construction of the carbon frame through bis-olefination of the central dialdehyde containing the ring functionality with a C15 ylide bearing the ionone moiety.
