The CAS Registry Mumber 81516-49-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,1 and 6 respectively; the second part has 2 digits, 4 and 9 respectively. Calculate Digit Verification of CAS Registry Number 81516-49: (7*8)+(6*1)+(5*5)+(4*1)+(3*6)+(2*4)+(1*9)=126 126 % 10 = 6 So 81516-49-6 is a valid CAS Registry Number.
Studies on 3-substituted 1,2-benzisoxazole derivatives. VII. Catalytic reduction of 3-sulfamoylmethyl-1,2-benzisoxazole and reactions of the resulting products
Uno,Kurokawa
, p. 333 - 335 (1982)
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