131335-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131335-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,3,3 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 131335-44:
(8*1)+(7*3)+(6*1)+(5*3)+(4*3)+(3*5)+(2*4)+(1*4)=89
89 % 10 = 9
So 131335-44-9 is a valid CAS Registry Number.
131335-44-9Relevant academic research and scientific papers
A Synthesis of the Lichen Xanthone Thiomelin
Elix, John A.,Portelli, Victor J.
, p. 1773 - 1778 (2007/10/02)
A total synthesis of thiomelin (2,4-dichloro-1,8-dihydroxy-5-methoxy-6-methyl-9H-xanthen-9-one) (1) has been achieved.
