90497-69-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90497-69-1 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, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 90497-69:
(7*9)+(6*0)+(5*4)+(4*9)+(3*7)+(2*6)+(1*9)=161
161 % 10 = 1
So 90497-69-1 is a valid CAS Registry Number.
90497-69-1Relevant articles and documents
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.
