136205-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136205-67-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,2,0 and 5 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 136205-67:
(8*1)+(7*3)+(6*6)+(5*2)+(4*0)+(3*5)+(2*6)+(1*7)=109
109 % 10 = 9
So 136205-67-9 is a valid CAS Registry Number.
136205-67-9Relevant articles and documents
Synthesis of naturally occurring (2S,3S)-(+)-aziridine-2,3-dicarboxylic acid
Legters,Thijs,Zwanenburg
, p. 5287 - 5294 (1991)
Diethyl (2R,3R)-(-)-oxirane-2,3-dicarboxylate was converted into diethyl (2S,3S)-(+)-aziridine-2,3-dicarboxylate in two steps, viz. ring opening with trimethylsilyl azide in N,N-dimethylformamide containing one equivalent of ethanol, followed by treatment
