WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 581216

CAS#: 108736-70-5

Description: Dads-E can be used in use of diaminodithiol for labeling small molecules with technetium-99m.The estrone derivative was prepared by alkylation of DADS while the fatty acid derivative -N,N'-bisethylenediamine hydrochloride, DADT-FA) was synthesized by alkylation of DADS followed by reduction. DADS-E was labeled in ethanol at elevated temperatures while DADT-FA was labeled at room temperature, both by stannous reduction. Paper chromatography showed both to be labeled and reverse-phase HPLC showed multiple peaks for both. Serum stability studies were performed by incubation at 37 degrees C with aliquots removed at 1 min and 1 day for analysis by size-exclusion HPLC. Initially, little pertechnetate or binding to serum proteins was observed whereas after 1 day the majority of activity in both cases was protein bound with 20 and 38% pertechnetate appearing for DADT-FA and DADS-E respectively.

Chemical Structure

CAS# 108736-70-5

Theoretical Analysis

MedKoo Cat#: 581216
Name: Dads-E
CAS#: 108736-70-5
Chemical Formula: C30H48Cl2N2O2S2
Exact Mass: 602.2534
Molecular Weight: 603.75
Elemental Analysis: C, 59.68; H, 8.01; Cl, 11.74; N, 4.64; O, 5.30; S, 10.62

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: Dads-E; Dads E; DadsE;

IUPAC/Chemical Name: 2-((Hexahydro-3,3,10,10-tetramethyl-1,2,5,8-dithiadiazecin-5(6H)-yl)methyl)-3-methoxyestra-1,3,5(10)-trien-17-one dihydrochloride


InChi Code: InChI=1S/C30H46N2O2S2.2ClH/c1-28(2)18-31-13-14-32(19-29(3,4)36-35-28)17-21-15-24-20(16-26(21)34-6)7-8-23-22(24)11-12-30(5)25(23)9-10-27(30)33;;/h15-16,22-23,25,31H,7-14,17-19H2,1-6H3;2*1H/t22-,23+,25-,30-;;/m0../s1

SMILES Code: C[C@]1([C@](CC2)([H])[C@]3([H])CCC4=C(C=C(CN5CC(C)(C)SSC(C)(C)CNCC5)C(OC)=C4)[C@@]3([H])CC1)C2=O.[H]Cl.[H]Cl

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 603.75 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Liang FH, Virzi F, Hnatowich DJ. The use of diaminodithiol for labeling small molecules with technetium-99m. Int J Rad Appl Instrum B. 1987;14(1):63-7. PubMed PMID: 3583757.