161768-67-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161768-67-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,7,6 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 161768-67:
(8*1)+(7*6)+(6*1)+(5*7)+(4*6)+(3*8)+(2*6)+(1*7)=158
158 % 10 = 8
So 161768-67-8 is a valid CAS Registry Number.
161768-67-8Relevant articles and documents
Preparation of heterocycle-masked β-enamino acids
Katritzky,Donkor,Fang
, p. 4041 - 4044 (2001)
The preparation of masked N-substituted Β-enamino acid derivatives 3a-n by reaction of 2-alkyloxa(thia)zolines 2a,b with imidoylbenzotriazoles 1a-g in the presence of LDA was described.
