340291-84-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 340291-84-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,0,2,9 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 340291-84:
(8*3)+(7*4)+(6*0)+(5*2)+(4*9)+(3*1)+(2*8)+(1*4)=121
121 % 10 = 1
So 340291-84-1 is a valid CAS Registry Number.
340291-84-1Relevant articles and documents
Total syntheses of the benzodiazepine alkaloids circumdatin F and circumdatin C
Witt,Bergman
, p. 2784 - 2788 (2007/10/03)
Total syntheses of circumdatin F and circumdatin C, which both possess a 3H-quinazolin-4-one as well as a 1,4-benzodiazepin-5-one moiety, are described. A tripeptide derivative was synthesized as a key intermediate and dehydrated to a benzoxazine by react