90497-70-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90497-70-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,4,9 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 90497-70:
(7*9)+(6*0)+(5*4)+(4*9)+(3*7)+(2*7)+(1*0)=154
154 % 10 = 4
So 90497-70-4 is a valid CAS Registry Number.
90497-70-4Relevant academic research and scientific papers
The efficient synthesis of chiral key intermediates for monobactam antibiotics
Nishida,Shibasaki,Ikegami
, p. 765 - 768 (2007/10/02)
Chemical asymmetric syntheses of the key intermediates (4,6,8) for the synthesis of monobactam antibiotics (SQ 26776 (azthreonam, sulfazecin, and SQ 26180) are accomplished from (±)-4-phenylsulfonyl-2-azetidinone.
