1053257-43-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1053257-43-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,3,2,5 and 7 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1053257-43:
(9*1)+(8*0)+(7*5)+(6*3)+(5*2)+(4*5)+(3*7)+(2*4)+(1*3)=124
124 % 10 = 4
So 1053257-43-4 is a valid CAS Registry Number.
1053257-43-4Relevant articles and documents
Synthesis of saframycins. VIII Synthesis of the ABC ring of safracins
Saito,Obara,Azumaya,Kubo
, p. 2620 - 2626 (2007/10/02)
An efficient synthesis of the 1,5-imino-3-benzazocine derivative (18) from 1,4-diacetyl-2,5-piperazinedione (7) and 4-methoxy-3-methylbenzaldehyde (8) is described. The tricyclic lactam (18) is shown to be a useful intermediate for preparation of a phenol