57321-33-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57321-33-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,3,2 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 57321-33:
(7*5)+(6*7)+(5*3)+(4*2)+(3*1)+(2*3)+(1*3)=112
112 % 10 = 2
So 57321-33-2 is a valid CAS Registry Number.
57321-33-2Relevant academic research and scientific papers
2-Halomethyl-2-nucleophilic substituted methyl penicillins
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, (2008/06/13)
Antibacterial compounds of the formula STR1 (where COB is carboxy or protected carboxy; Hal is halogen; R is amino or protected amino; R' is mercapto-protecting group; and X is nucleophilic group) Are prepared from penicillin 1-oxides having X on its 2-me
