180633-60-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 180633-60-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,0,6,3 and 3 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 180633-60:
(8*1)+(7*8)+(6*0)+(5*6)+(4*3)+(3*3)+(2*6)+(1*0)=127
127 % 10 = 7
So 180633-60-7 is a valid CAS Registry Number.
180633-60-7Relevant articles and documents
A three-component coupling approach to the marine bis-indole alkaloids: Topsentin, deoxytopsentin and bromotopsentin
Achab, Said
, p. 5503 - 5506 (1996)
The total syntheses of three marine bis-indole alkaloids (1, 2, 4) of the topsentin family together with the synthesis of unnatural deoxybromotopsentin (33) are described. Key elements include, a 1,2-addition-oxidation sequence to construct the bis-hetero