331628-17-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331628-17-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,6,2 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 331628-17:
(8*3)+(7*3)+(6*1)+(5*6)+(4*2)+(3*8)+(2*1)+(1*7)=122
122 % 10 = 2
So 331628-17-2 is a valid CAS Registry Number.
331628-17-2Relevant academic research and scientific papers
Synthesis of some novel benzylidenehydantoins: Amino acids derivatives
El-Sayed, Ragab A.
, p. 91 - 94 (2007/10/03)
5-Benzylidenehydantoin reacts with chlorosulfonic acid to give the corresponding p-sulfonyl chloride. Condensation of the latter with amino acids leads to sulfonylamino acid derivatives, which on coupling with glycine methyl ester hydrochloride in THF-Et
