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13400-67-4

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13400-67-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13400-67-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,4,0 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 13400-67:
(7*1)+(6*3)+(5*4)+(4*0)+(3*0)+(2*6)+(1*7)=64
64 % 10 = 4
So 13400-67-4 is a valid CAS Registry Number.

13400-67-4Relevant articles and documents

The synthesis of facial amphiphile 3α,7α-diaminocholestane

Khan, Sharaf Nawaz,Cho, Nam-Ju,Kim, Hong-Seok

, p. 5189 - 5192 (2008/02/08)

The facial amphiphile 3α,7α-diaminocholestane 3 was synthesized from 3β-acetoxy-7-ketocholestane 1 through a stepwise reductive amination. The reductive amination of 1 with NH4OAc in the presence of NaBH3CN, and protection with Boc2O yielded 7α-(tert-butyloxycarbonyl)-aminocholestane 4 in 86% yield. The reductive amination of 6, which was obtained from 4 after hydrolysis and subsequent oxidation, with NH4OTf in the presence of NaBH(OEh)3 provided 3 in 75% yield after protection with Boc2O.

Photoinduced Molecular Transformations. Part 136. Reactions of Alkoxyl Radicals generated from Hypoiodites of 3β-Hydroxy-7-oxo-Δ5-Steroids. Synthesis of Some Functionalized Oxasteroids

Suginome, Hiroshi,Kondoh, Takahiko

, p. 3119 - 3124 (2007/10/02)

The synthesis of several unsaturated 3-oxasteroids and 4a-homo-4-oxasteroids of cholestane series functionalized at their B-ring is described; 3β-hydroxycholest-5-en-7-one and its 4,4-dimethyl derivative were transformed into 3-oxacholest-5-en-7-one and i

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