899440-18-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 899440-18-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,9,4,4 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 899440-18:
(8*8)+(7*9)+(6*9)+(5*4)+(4*4)+(3*0)+(2*1)+(1*8)=227
227 % 10 = 7
So 899440-18-7 is a valid CAS Registry Number.
899440-18-7Relevant articles and documents
Preparation of cyclic N-tert-butylsulfonyl enamines by Rh(II)-mediated ring expansion of α-diazoesters
Chen, Shufeng,Zhao, Yonghua,Wang, Jianbo
, p. 1705 - 1710 (2006)
The anion derived from ethyl diazoacetate adds to N-tert-butylsulfonyl ketimines to give β-tert-butylsulfonylamino α-diazoesters, which are further transformed into cyclic enamines by treatment with Rh 2(OAc)4, through 1,2-C-C bond m
