121221-37-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121221-37-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,2,2 and 1 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121221-37:
(8*1)+(7*2)+(6*1)+(5*2)+(4*2)+(3*1)+(2*3)+(1*7)=62
62 % 10 = 2
So 121221-37-2 is a valid CAS Registry Number.
121221-37-2Relevant articles and documents
From Dichlorocyclopropanes to Furans and Cyclopentadienes via Vinylcarbenes
Mueller, Paul,Pautex, Nicole
, p. 1630 - 1637 (2007/10/02)
Base-induced elimination of dichlorocarbene adducts 2 to 9-alkoxyphenanthrenes 1 leads to furans 6, presumably via cyclopropenes 3 which undergo rearrangement to vinylcarbenes 4 and C-H insertion.By the same sequence, the 9-substituted alkylphenanthrene a
