Cas 157224-67-4,C19H24N4O3

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Check Digit Verification of cas no

The CAS Registry Mumber 157224-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,2,2 and 4 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 157224-67:
(8*1)+(7*5)+(6*7)+(5*2)+(4*2)+(3*4)+(2*6)+(1*7)=134
134 % 10 = 4
So 157224-67-4 is a valid CAS Registry Number.

157224-67-4Upstream product

109-90-0 ethyl isocyanate

157224-67-4Downstream Products

146373-98-0 3(R,S,)-Amino-5-cyclohexyl-1,3-dihydro-1-methyl-2H-1,4-benzodiazepin-2-one

157224-67-4Relevant academic research and scientific papers

Carbamate oxime reduction: A new route to C3-amino-1,4-benzodiazepines

Bourrain,Showell

, p. 505 - 508 (1994)

A mild reduction method of C3-oximido-1,4-benzodiazepines to afford the C3-amino derivatives is described. The key step involves the formation of a carbamate oxime intermediate. The greater reactivity of the C3-(ethylaminocarbonyl)oximido-1,4-benzodiazepi

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157224-67-4

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