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916818-36-5

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916818-36-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 916818-36-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,6,8,1 and 8 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 916818-36:
(8*9)+(7*1)+(6*6)+(5*8)+(4*1)+(3*8)+(2*3)+(1*6)=195
195 % 10 = 5
So 916818-36-5 is a valid CAS Registry Number.

916818-36-5Upstream product

916818-36-5Downstream Products

916818-36-5Relevant articles and documents

Microwave-assisted synthesis of deuterium labeled estrogen fatty acid esters

Kiuru, Paula S.,Waehaelae, Kristiina

, p. 54 - 60 (2007/10/03)

Deuterated analogs of estrogen fatty acid esters are needed as internal standards for isotope dilution GC/MS analyses. We have developed a rapid and efficient synthesis for 2,4,16,16-D4-estrone palmitate, stearate, oleate, linoleate, and linolenate and the corresponding 2,4,16,16,17α- D5-estradiol fatty acid 17-mono and 3,17-diesters using analogous fatty acid chlorides or fatty acid anhydrides and 4-(dimethylamino)pyridine under microwave irradiation. Chemoselective hydrolysis of fatty acid diesters was carried out by KOH in t-BuOH.

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