74583-98-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74583-98-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,8 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 74583-98:
(7*7)+(6*4)+(5*5)+(4*8)+(3*3)+(2*9)+(1*8)=165
165 % 10 = 5
So 74583-98-5 is a valid CAS Registry Number.
74583-98-5Relevant academic research and scientific papers
C(2)-VINYLHALO-CEPHEMS
Spry, Douglas O.
, p. 1289 - 1292 (2007/10/02)
C(2)-vinylhalo-cephems are prepared from a Pummerer type rearrangement of the corresponding sulfoxide with dimethyl immonium halide.
