21639-45-2 Usage
Synthesis Reference(s)
Journal of the American Chemical Society, 74, p. 476, 1952 DOI: 10.1021/ja01122a058
Check Digit Verification of cas no
The CAS Registry Mumber 21639-45-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,6,3 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21639-45:
(7*2)+(6*1)+(5*6)+(4*3)+(3*9)+(2*4)+(1*5)=102
102 % 10 = 2
So 21639-45-2 is a valid CAS Registry Number.
InChI:InChI=1/C9H9NO3S/c11-8(12)6-10-9(13)14-7-4-2-1-3-5-7/h1-5H,6H2,(H,10,13)(H,11,12)