33777-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33777-04-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,7,7 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 33777-04:
(7*3)+(6*3)+(5*7)+(4*7)+(3*7)+(2*0)+(1*4)=127
127 % 10 = 7
So 33777-04-7 is a valid CAS Registry Number.
33777-04-7Relevant articles and documents
A new one-pot synthesis of 2-quaternary 1,3-diketones
Ren,Wang,Dou,Fan,He,Song,Xia,Li,Jia,Li,Tu
, p. 2384 - 2388 (2001)
A facile one-pot synthesis of 1,3-diketones with stereogenic quaternary center at C-2 has been developed on the basis of an oxidative-rearrangement of a series of tertiary α-hydroxy epoxides on treatment with pyridinium chlorochromate (PCC). A possible mechanism is also discussed.
