175021-31-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 175021-31-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,0,2 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 175021-31:
(8*1)+(7*7)+(6*5)+(5*0)+(4*2)+(3*1)+(2*3)+(1*1)=105
105 % 10 = 5
So 175021-31-5 is a valid CAS Registry Number.
175021-31-5Relevant articles and documents
1,4-Disubstituted and 1,4,5-trisubstituted 2-[(benzotriazol-1-yl)methyl]pyrroles as versatile synthetic intermediates
Katritzky, Alan R.,Li, Jianqing
, p. 1624 - 1628 (1996)
The CH2Bt substituent, unlike previously used CH2X substituents, enables (i) the synthetic elaboration of pyrroles with unsubstituted ring positions and (ii) electrophilic as well as nucleophilic substitutions to give pyrroles of typ
