336884-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 336884-21-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,6,8,8 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 336884-21:
(8*3)+(7*3)+(6*6)+(5*8)+(4*8)+(3*4)+(2*2)+(1*1)=170
170 % 10 = 0
So 336884-21-0 is a valid CAS Registry Number.
336884-21-0Relevant articles and documents
Tandem hemiketal formation-intramolecular Friedel-Crafts alkylation: A facile route to hetero-atom-substituted benzo-fused bicyclo[3.3.1]nonanes
Wu, Yikang,Li, Yan,Wu, Yu-Lin
, p. 163 - 171 (2001)
A previously unknown intramolecular Friedel-Crafts alkylation with in situ formed hemiketals as the electrophile is reported.