64370-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64370-21-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,3,7 and 0 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 64370-21:
(7*6)+(6*4)+(5*3)+(4*7)+(3*0)+(2*2)+(1*1)=114
114 % 10 = 4
So 64370-21-4 is a valid CAS Registry Number.
64370-21-4Relevant articles and documents
2-Penem compounds
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, (2008/06/13)
The invention relates to 6-amino-2-penem-3-carboxylic acid compounds of the formula STR1 in which R1a denotes hydrogen or an amino protective group R1A and R1b represents hydrogen or an acy