310903-05-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 310903-05-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,0,9,0 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 310903-05:
(8*3)+(7*1)+(6*0)+(5*9)+(4*0)+(3*3)+(2*0)+(1*5)=90
90 % 10 = 0
So 310903-05-0 is a valid CAS Registry Number.
310903-05-0Relevant articles and documents
The squalestatins: Tricyclic 3,4-β-lactone and 3,4-oxetane systems
Cox,Morley,Procopiou,Sharratt,Watson,Wild
, p. 7547 - 7550 (2007/10/03)
Squalestatin 3,4-β-lactone-4,5-dimethyl ester (8) was reductively ring-opened to yield squalestatin 3-hydroxymethyl-4,5-dimethyl ester (6) using mild reducing conditions (sodium borohydride). Similarly, squalestatin 3,4-oxetane-4,5-dimethyl ester (10) was